Practice Quizzes and MCQs

Question 1 of 536

Q.1 Feedback inhibition of enzymes is affected by which of the following

enzyme
substrate
end products
intermediate end products

Question 2 of 536

Q.2 An example of competitive inhibition of an enzyme is the inhibition of

succinic dehydrogenase by malonic acid
cytochrome oxidase by cyanide
hexokinase by glucose-6-phosphate
carbonic anhydrase by carbon dioxide

Question 3 of 536

Q.3 Insulin is made up of _______ and _______.

glucose and fructose
glucose and fructose
fructose and mannose
mannose and glucose

Question 4 of 536

Q.4 Enzymes increase the rate of reaction by

lowering activation energy
increasing activation energy
increasing temperature and pH
decreasing temperature and pH

Question 5 of 536

Q.5 Which of the following statements regarding enzyme inhibition is correct?

Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein
Non-competitive inhibitors often bind to the enzyme irreversibly
Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme
Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate

Question 6 of 536

Q.6 Which of the following is not a pyrimidine?

Uracil
Cytosine
Guanine
Thymine

Question 7 of 536

Q.7 Hydrolysis of starch occurs with the help of

Peptidase
Amylase
Sucrose
Lipase

Question 8 of 536

Q.8 Assertion: Arachidic acid is an unsaturated fatty acid Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids

Both Assertion and Reason are true and Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion
Assertion is true, but Reason is false.
Both Assertion and Reason are false

Question 9 of 536

Q.9 Which of the following influence feedback inhibition of enzyme?

End product
External factors
Enzyme
Substrate

Question 10 of 536

Q.10 Which of the following is not a polysaccharide?

Lactose
Starch
Glycogen
Dextrin

Question 11 of 536

Q.11 Inulin is made up of _______ and _______

glucose and fructose
glucose and fructose
fructose and mannose
mannose and glucose

Question 12 of 536

Q.12 A protein having both structural and enzymatic traits is

Collagen
Trypsin
Myosin
Actin

Question 13 of 536

Q.13 NADP contains vitamin ______

B1
B2
B3
B12

Question 14 of 536

Q.14 With reference to enzymes, which one of the following statements is true?

Apoenzyme = Holoenzyme + Coenzyme
Coenzyme = Apoenzyme + Holoenzyme
Holoenzyme = Apoenzyme + Coenzyme
Holoenzyme = Coenzyme – Apoenzyme

Question 15 of 536

Q.15 Inhibitor binds to the active site of the enzyme. Hence blocking the reaction. This is an example of

allosteric inhibition
feedback inhibition
uncompetitive inhibition
competitive inhibition

Question 16 of 536

Q.16 The fastest enzyme known is

DNA polymerase
carbonic anhydrase
carbonic dehydrogenase
DNA ligase

Question 17 of 536

Q.17 Lecithin is a

polysaccharide
protein
nucleic acid
lipid

Question 18 of 536

Q.18 The minimum amount of energy required to initiate a chemical reaction is called

enzymatic energy
activation energy
substrate energy
initiation energy

Question 19 of 536

Q.19 Enzymes, vitamins and hormones are common in

Enhancing oxidative metabolism
Being synthesised in the body of organisms
Being proteinaceous
Regulating metabolism

Question 20 of 536

Q.20 Nitrogenous bases present in DNA

Adenine, guanine, cytosine, uracil
Adenine, guanine, cytosine, thymine
Adenine, thymine, uracil
Guanine, uracil

Question 21 of 536

Q.21 Metabolic intermediates found in living system which are essential for growth and life is called___________

Saponins
Tannins
Secondary metabolite
Primary metabolites

Question 22 of 536

Q.22 Enormous diversity of protein molecules is due to

R groups of amino acids
Sequence of amino acids
Peptide bonds
Amino groups of amino acids

Question 23 of 536

Q.23 Anti-parallel strands of a DNA molecule mean that

One strand turns anticlockwise
Phosphate groups at the start of two DNA strands (poles) are in opposite position
Phosphate groups of two DNA strands at their ends share the same position
One strand turns clockwise

Question 24 of 536

Q.24 The introduction of t-DNA into plants involves

Altering the pH of the soil, then heat shocking the plants
Exposing the plants to cold for a brief period
Allowing the plant roots to stand in water
Infection of the plant by Agrobacterium tumefaciens

Question 25 of 536

Q.25 The most common monomer of carbohydrates is

Sucrose
Fructose
Maltose
Glucose

Question 26 of 536

Q.1 Which of the following statements is the most appropriate for sickle cell anaemia ?

It cannot be treated with iron supplements.
It is a molecular disease.
It conferes resistance to acquiring malaria
All of the above.

Question 27 of 536

Q.2 The first genetic material could be

protein
cabohydrates
DNA
RNA

Question 28 of 536

Q.3 The human chromosome with the highest and least number of genes in them are respectively

chromosome 21 and Y
chromosome 1 and X
chromosome 1 and Y
chromosome X and Y

Question 29 of 536

Q.4 Who amongst the following scientist had no contribution in the development of the double helix model for the structure of DN A ?

Rosalind Franklin
Maurice Wilkins
Erwin Chargaff
Meselson and Stahl

Question 30 of 536

Q.5 Which of the following steps in transcription is catalysed by RNA polymerase ?

Initiation
Elongation
Termination
All of the above

Question 31 of 536

Q.6 Control of gene expression takes place at the level of

DNA-replication
transcription
translation
none of the above

Question 32 of 536

Q.7 Which was the last human chromosome to be completely sequenced ?

Chromosome 1
Chromosome 11
Chromosome 21
Chromosome X

Question 33 of 536

Q.8 In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called

A – DNA
B – DNA
cDNA
rDNA

Question 34 of 536

Q.9 If the sequence of initrogen bases of the coding strand of DNA in a transcription unit is: 5’ – ATGAATG – 3’, the sequence of bases in its RNA transcript would be

5’ – AUG A AUG – 3’
5’ – UACUU AC – 3’
5’ – CAUUCAU – 3’
5’ – GUAAGUA – 3’.

Question 35 of 536

Q.10 The RNA polymerase holocnzyme transcribes

the promoter, structural gene and the terminator region
the promoter and the terminator region
the structural gene and the terminator region
the structural gene only.

Question 36 of 536

Q.11 If the base sequence of a codon in mRNA is 5’ – AUG – 3′ the sequence of tRNA pairing with it must be

5’ – UAC – 3’
5’ – CAU – 3’
5’-AUG – 3’
5’ – GUA – 3’

Question 37 of 536

Q.12 The amino acid attaches to the tRNA at its

5’- end
3’ – end
anticodon site
DHUloop.

Question 38 of 536

Q.13 To initiate translation, the wiRNA first bind to

the smaller ribosomal sub-unit
the larger ribosomal sub-unit
the whole ribosome
no such specificity exists

Question 39 of 536

Q.14 In E. colt, the lac operon gets switched on when

lactose is present and it binds to the repressor
repressor binds to operator
RNA polymerase binds to the operator
lactose is present and it binds to RNA polymerase.

Question 40 of 536

Q.15 In DNA strand, the nucleotides are linked together by

glycosidic bonds
phosphodiester bonds
peptide bonds
hydrogen bonds

Question 41 of 536

Q.16 If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it ?

20%
40%
30%
60%

Question 42 of 536

Q.17 If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?

ATGCATGCA
AUGCAUGCA
TACTACGT
UACGUACGU

Question 43 of 536

Q.18 How far is each base pair from the next one in DNA double helix model ?

2 nm
3.4 nm
34 nm
0.34 nm

Question 44 of 536

Q.19 Synthesis of DNA from RNA is explained by

central dogma reverse
reverse transcription
feminism
all of these

Question 45 of 536

Q.20 Histone proteins are

basic, negatively charged
basic, positively charged
acidic, positively charged
acidic, negatively charged

Question 46 of 536

Q.21 The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called

nucleotides
nucleosides
histone octamer
nucleosomes

Question 47 of 536

Q.22 Find out the wrong statement about heterochromatin,

It is densely packed
It stains dark
It is transcriptionally active.
It is late replicating

Question 48 of 536

Q.23 They year 2003 was celebrated as the 50th anniversary of discovery of

transposons by Barbare Me Clintock
structure of DNA by Watson and Crick
Mendel’s laws of inheritance
biotechnology by Kary Muliis.

Question 49 of 536

Q.24 Amino acids which are specified by single codons are

phenylalanine and arginine
tryptophan and methionine
valine and proline
methionine and aroinine

Question 50 of 536

Q.25 Which out of the following statements is incorrect ?

Genetic code is ambiguous.
Genetic code is deqenerate
Genetic code is universal
Genetic code is non-overlanning.

Question 51 of 536

Q.1 Which of the following statements is the most appropriate for sickle cell anaemia ?

It cannot be treated with iron supplements.
It is a molecular disease.
It conferes resistance to acquiring malaria
All of the above.

Question 52 of 536

Q.2 The first genetic material could be

protein
cabohydrates
DNA
RNA

Question 53 of 536

Q.3 The human chromosome with the highest and least number of genes in them are respectively

chromosome 21 and Y
chromosome 1 and X
chromosome 1 and Y
chromosome X and Y

Question 54 of 536

Q.4 Who amongst the following scientist had no contribution in the development of the double helix model for the structure of DN A ?

Rosalind Franklin
Maurice Wilkins
Erwin Chargaff
Meselson and Stahl

Question 55 of 536

Q.5 Which of the following steps in transcription is catalysed by RNA polymerase ?

Initiation
Elongation
Termination
All of the above

Question 56 of 536

Q.6 Control of gene expression takes place at the level of

DNA-replication
transcription
translation
none of the above

Question 57 of 536

Q.7 Which was the last human chromosome to be completely sequenced ?

Chromosome 1
Chromosome 11
Chromosome 21
Chromosome X

Question 58 of 536

Q.8 In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called

A – DNA
B – DNA
cDNA
rDNA

Question 59 of 536

Q.9 If the sequence of initrogen bases of the coding strand of DNA in a transcription unit is: 5’ – ATGAATG – 3’, the sequence of bases in its RNA transcript would be

5’ – AUG A AUG – 3’
5’ – UACUU AC – 3’
5’ – CAUUCAU – 3’
5’ – GUAAGUA – 3’.

Question 60 of 536

Q.10 The RNA polymerase holocnzyme transcribes

the promoter, structural gene and the terminator region
the promoter and the terminator region
the structural gene and the terminator region
the structural gene only.

Question 61 of 536

Q.11 If the base sequence of a codon in mRNA is 5’ – AUG – 3′ the sequence of tRNA pairing with it must be

5’ – UAC – 3’
5’ – CAU – 3’
5’-AUG – 3’
5’ – GUA – 3’

Question 62 of 536

Q.12 The amino acid attaches to the tRNA at its

5’- end
3’ – end
anticodon site
DHUloop.

Question 63 of 536

Q.13 To initiate translation, the wiRNA first bind to

the smaller ribosomal sub-unit
the larger ribosomal sub-unit
the whole ribosome
no such specificity exists

Question 64 of 536

Q.14 In E. colt, the lac operon gets switched on when

lactose is present and it binds to the repressor
repressor binds to operator
RNA polymerase binds to the operator
lactose is present and it binds to RNA polymerase.

Question 65 of 536

Q.15 In DNA strand, the nucleotides are linked together by

glycosidic bonds
phosphodiester bonds
peptide bonds
hydrogen bonds

Question 66 of 536

Q.16 If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it ?

20%
40%
30%
60%

Question 67 of 536

Q.17 If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?

ATGCATGCA
AUGCAUGCA
TACTACGT
UACGUACGU

Question 68 of 536

Q.18 How far is each base pair from the next one in DNA double helix model ?

2 nm
3.4 nm
34 nm
0.34 nm

Question 69 of 536

Q.19 Synthesis of DNA from RNA is explained by

central dogma reverse
reverse transcription
feminism
all of these

Question 70 of 536

Q.20 Histone proteins are

basic, negatively charged
basic, positively charged
acidic, positively charged
acidic, negatively charged

Question 71 of 536

Q.21 The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called

nucleotides
nucleosides
histone octamer
nucleosomes

Question 72 of 536

Q.22 Find out the wrong statement about heterochromatin,

It is densely packed
It stains dark
It is transcriptionally active.
It is late replicating

Question 73 of 536

Q.23 They year 2003 was celebrated as the 50th anniversary of discovery of

transposons by Barbare Me Clintock
structure of DNA by Watson and Crick
Mendel’s laws of inheritance
biotechnology by Kary Muliis.

Question 74 of 536

Q.24 Amino acids which are specified by single codons are

phenylalanine and arginine
tryptophan and methionine
valine and proline
methionine and aroinine

Question 75 of 536

Q.25 Which out of the following statements is incorrect ?

Genetic code is ambiguous.
Genetic code is deqenerate
Genetic code is universal
Genetic code is non-overlanning.

Question 76 of 536

Q.1 Which among the following is not ammonotelic

Aquatic amphibian
Aquatic insect
Bony fishes
Mammal

Question 77 of 536

Q.2 Which among the following is not ureotelic

Mammal
Aquatic insect
Terrestrial amphibian
Marine fishes

Question 78 of 536

Q.3 Which among the following is not uricootelic

Mammal
Reptiles
Birds
Snails

Question 79 of 536

Q.4 Which among is the most toxic

Ammonia
Uric acid
Urea
None of the above

Question 80 of 536

Q.5 Which requires min water for removal from body

Ammonia
Urea
Uric acid
None of the above

Question 81 of 536

Q.6 Flame cells or protonephridia are NOT excretory structure of

Planaria
Annelids
Cockroach
Rotifers

Question 82 of 536

Q.7 Kidney is present between

T12 L3
T11 L2
T 10 L1
None of the above

Question 83 of 536

Q.8 Green glands/ antennal glands are excretory structures of which organism

Earthworm
Prawn
Cockroach
Planaria

Question 84 of 536

Q.9 What is an average weight of kidney

80-90g
120-150g
110-120g
120-170g

Question 85 of 536

Q.10 Each kidney has how many nephrons

1 million
2 million
2 thousand
2 hundred

Question 86 of 536

Q.11 What are the structural and functional unit of kidney

Nephrons
Cell
Neurons
None of the above

Question 87 of 536

Q.12 Bowman capsule with glomerulus is known as

Malphigian body
Renal corpuscle
Malphigian capsule
Both b and c

Question 88 of 536

Q.13 Which nephrons run deep into the medulla

Cortical nephron
Juxta medullary nephron
Both a and b
None of the above

Question 89 of 536

Q.14 Kidney transplantation is the ultimate method of correction in which case

Renal calculi
Renal failure
Uremia
None of the above

Question 90 of 536

Q.15 Which loop of hence is permeable to water

Descending loop
Ascending loop
Both the loops
None of the above

Question 91 of 536

Q.16 Which gland remove substances like sterols, hydrocarbons and waxes

Pineal gland
Pancreas
Gall bladder
Sweat glands

Question 92 of 536

Q.17 Presence of glucose in urine is known as

Ketonuria
Glycosides
Glycosuria
None of the above

Question 93 of 536

Q.18 Inflammation of glomeruli of kidney is known as

Uremia
Renal failure
Renal calculi
Glomerulonephritis

Question 94 of 536

Q.19 Angiotensinogen 2 is

Vasoconstriction
Vasodilation
Both a and b
None of the above

Question 95 of 536

Q.20 ANF can cause

Vasoconstriction
Vasodilation
Both a and b
None of the above

Question 96 of 536

Q.21 GFR in healthy individual is

180 L
150L
130L
120L

Question 97 of 536

Q.22 Ciliated columnar cells are lined in which of the following

DCT
Both a and c
PCT
None of the above

Question 98 of 536

Q.23 On average how much blood is filtered by kidney per minute

500-800ml
1100- 1200ml
1500-1700ml
1600-1800ml

Question 99 of 536

Q.24 Vasa recta is present in which type of nephron

Cortical nephron
Juxta medullary nephron
Both a and b
None of the above

Question 100 of 536

Q.1 Which among the following is not ammonotelic

Aquatic amphibian
Aquatic insect
Bony fishes
Mammal

Question 101 of 536

Q.2 Which among the following is not ureotelic

Mammal
Aquatic insect
Terrestrial amphibian
Marine fishes

Question 102 of 536

Q.3 Which among the following is not uricootelic

Mammal
Reptiles
Birds
Snails

Question 103 of 536

Q.4 Which among is the most toxic

Ammonia
Uric acid
Urea
None of the above

Question 104 of 536

Q.5 Which requires min water for removal from body

Ammonia
Urea
Uric acid
None of the above

Question 105 of 536

Q.6 Flame cells or protonephridia are NOT excretory structure of

Planaria
Annelids
Cockroach
Rotifers

Question 106 of 536

Q.7 Kidney is present between

T12 L3
T11 L2
T 10 L1
None of the above

Question 107 of 536

Q.8 Green glands/ antennal glands are excretory structures of which organism

Earthworm
Prawn
Cockroach
Planaria

Question 108 of 536

Q.9 What is an average weight of kidney

80-90g
120-150g
110-120g
120-170g

Question 109 of 536

Q.10 Each kidney has how many nephrons

1 million
2 million
2 thousand
2 hundred

Question 110 of 536

Q.11 What are the structural and functional unit of kidney

Nephrons
Cell
Neurons
None of the above

Question 111 of 536

Q.12 Bowman capsule with glomerulus is known as

Malphigian body
Renal corpuscle
Malphigian capsule
Both b and c

Question 112 of 536

Q.13 Which nephrons run deep into the medulla

Cortical nephron
Juxta medullary nephron
Both a and b
None of the above

Question 113 of 536

Q.14 Kidney transplantation is the ultimate method of correction in which case

Renal calculi
Renal failure
Uremia
None of the above

Question 114 of 536

Q.15 Which loop of hence is permeable to water

Descending loop
Ascending loop
Both the loops
None of the above

Question 115 of 536

Q.16 Which gland remove substances like sterols, hydrocarbons and waxes

Pineal gland
Pancreas
Gall bladder
Sweat glands

Question 116 of 536

Q.17 Presence of glucose in urine is known as

Ketonuria
Glycosides
Glycosuria
None of the above

Question 117 of 536

Q.18 Inflammation of glomeruli of kidney is known as

Uremia
Renal failure
Renal calculi
Glomerulonephritis

Question 118 of 536

Q.19 Angiotensinogen 2 is

Vasoconstriction
Vasodilation
Both a and b
None of the above

Question 119 of 536

Q.20 ANF can cause

Vasoconstriction
Vasodilation
Both a and b
None of the above

Question 120 of 536

Q.21 GFR in healthy individual is

180 L
150L
130L
120L

Question 121 of 536

Q.22 Ciliated columnar cells are lined in which of the following

DCT
Both a and c
PCT
None of the above

Question 122 of 536

Q.23 On average how much blood is filtered by kidney per minute

500-800ml
1100- 1200ml
1500-1700ml
1600-1800ml

Question 123 of 536

Q.24 Vasa recta is present in which type of nephron

Cortical nephron
Juxta medullary nephron
Both a and b
None of the above

Question 124 of 536

Q.1 Golgi complex and endoplasmic reticulum cannot be seen during

late telophase
late prophase
early anaphase
late metaphase

Question 125 of 536

Q.2 Cell plate grows from

walls to the centre
centre to the walls
in patches
simultaneously

Question 126 of 536

Q.3 Choose the correct sequence. A. Chromatin condensation B. Protein synthesis C. Duplication of centrioles D. Centrioles moves towards opposite poles

C, A, B, D
C, B, A, D
C, D, B, A
A, C, D, B

Question 127 of 536

Q.4 If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into

Prophase
Anaphase
Telophase
Metaphase

Question 128 of 536

Q.5 Karyokinesis is the term used for

division of cytoplasm
division of nucleoplasm
division of nucleus
separation of daughter chromosomes

Question 129 of 536

Q.6 During which stage the chromosomes first become visible

Anaphase
Metaphase
Prophase
Telophase

Question 130 of 536

Q.7 In mitosis, nuclear envelope and nucleolus disappear during

Metaphase
Interphase
Prophase
Telophase

Question 131 of 536

Q.8 Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences

II, I, IV, III
III, II, I, IV
IV, III, II, I
I, IV, III, II

Question 132 of 536

Q.9 The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is

splitting of the centromeres
splitting of the chromatids
replication of the genetic material
condensation of the chromatin

Question 133 of 536

Q.10 what type of plant is formed when colchicine is used in the process of development of Raphanobrassica?

Autotetraploid
Haploid
Triploid
Allotetraploid

Question 134 of 536

Q.11 Meiosis occurs for the human female in ______.

Pancreas
Liver
Ovary
Kidney

Question 135 of 536

Q.12 Choose the correct sequence. A. Pachytene B. Zygotene C. Leptotene D. Diakinesis E. Diplotene

C, B, A, D, E
C, A, B, E, D
C, B, A, E, D
D, B, C, E, A

Question 136 of 536

Q.13 How many chromosomes are there in onion root tip cell?

6
16
26
36

Question 137 of 536

Q.14 Lampbrush chromosomes are observed in

Mitotic prophase
Mitotic metaphase
Meiotic metaphase
Meiotic prophase

Question 138 of 536

Q.15 Which of the following cellular structures always disappears during mitosis and meiosis?

Plasma membrane
Nucleolus and nuclear envelope
Plastids
none of these

Question 139 of 536

Q.16 Centromere is a constituent of

Ribosome
ER
Chromosome
Mitochondrion

Question 140 of 536

Q.17 In which phase of cell cycle, proteins are synthesised?

G0
G1
G2
S

Question 141 of 536

Q.18

Early prophase
Early metaphase
Early telophase
Early anaphase

Question 142 of 536

Q.19 The stage in which daughter chromosomes move toward the poles of the spindle is

Anaphase
Metaphase
Prophase
Telophase

Question 143 of 536

Q.20 Synaptonemal complex dissolves in _____ stage.

Zygotene
Pachytene
Diakinesis
Diplotene

Question 144 of 536

Q.21 Synapsis occurs between

A male and female gametes
Ribosome and m-RNA
Spindle fibres and centromeres
Two homologous chromosomes

Question 145 of 536

Q.22 Division of nucleus without being followed by cytokinesis results into

Phargmoplast
Polyploidy
Uninucleate condition
Multinucleate condition

Question 146 of 536

Q.23 A cell plate is laid down during

Cytokinesis
Interphase
Karyokinesis
None of these

Question 147 of 536

Q.24 Crossing over results the exchange of genetic material, which occurs between

Non-sister chromosomes
Sister chromatids
Non-homologous chromosome
Homologous chromosomes

Question 148 of 536

Q.25 The number of chromosome and the amount of DNA are changed in

Metaphase and M phase
Anaphase and S phase
Interphase and S phase
None of these

Question 149 of 536

Q.1 Golgi complex and endoplasmic reticulum cannot be seen during

late telophase
late prophase
early anaphase
late metaphase

Question 150 of 536

Q.2 Cell plate grows from

walls to the centre
centre to the walls
in patches
simultaneously

Question 151 of 536

Q.3 Choose the correct sequence. A. Chromatin condensation B. Protein synthesis C. Duplication of centrioles D. Centrioles moves towards opposite poles

C, A, B, D
C, B, A, D
C, D, B, A
A, C, D, B

Question 152 of 536

Q.4 If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into

Prophase
Anaphase
Telophase
Metaphase

Question 153 of 536

Q.5 Karyokinesis is the term used for

division of cytoplasm
division of nucleoplasm
division of nucleus
separation of daughter chromosomes

Question 154 of 536

Q.6 During which stage the chromosomes first become visible

Anaphase
Metaphase
Prophase
Telophase

Question 155 of 536

Q.7 In mitosis, nuclear envelope and nucleolus disappear during

Metaphase
Interphase
Prophase
Telophase

Question 156 of 536

Q.8 Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences

II, I, IV, III
III, II, I, IV
IV, III, II, I
I, IV, III, II

Question 157 of 536

Q.9 The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is

splitting of the centromeres
splitting of the chromatids
replication of the genetic material
condensation of the chromatin

Question 158 of 536

Q.10 what type of plant is formed when colchicine is used in the process of development of Raphanobrassica?

Autotetraploid
Haploid
Triploid
Allotetraploid

Question 159 of 536

Q.11 Meiosis occurs for the human female in ______.

Pancreas
Liver
Ovary
Kidney

Question 160 of 536

Q.12 Choose the correct sequence. A. Pachytene B. Zygotene C. Leptotene D. Diakinesis E. Diplotene

C, B, A, D, E
C, A, B, E, D
C, B, A, E, D
D, B, C, E, A

Question 161 of 536

Q.13 How many chromosomes are there in onion root tip cell?

6
16
26
36

Question 162 of 536

Q.14 Lampbrush chromosomes are observed in

Mitotic prophase
Mitotic metaphase
Meiotic metaphase
Meiotic prophase

Question 163 of 536

Q.15 Which of the following cellular structures always disappears during mitosis and meiosis?

Plasma membrane
Nucleolus and nuclear envelope
Plastids
none of these

Question 164 of 536

Q.16 Centromere is a constituent of

Ribosome
ER
Chromosome
Mitochondrion

Question 165 of 536

Q.17 In which phase of cell cycle, proteins are synthesised?

G0
G1
G2
S

Question 166 of 536

Q.18

Early prophase
Early metaphase
Early telophase
Early anaphase

Question 167 of 536

Q.19 The stage in which daughter chromosomes move toward the poles of the spindle is

Anaphase
Metaphase
Prophase
Telophase

Question 168 of 536

Q.20 Synaptonemal complex dissolves in _____ stage.

Zygotene
Pachytene
Diakinesis
Diplotene

Question 169 of 536

Q.21 Synapsis occurs between

A male and female gametes
Ribosome and m-RNA
Spindle fibres and centromeres
Two homologous chromosomes

Question 170 of 536

Q.22 Division of nucleus without being followed by cytokinesis results into

Phargmoplast
Polyploidy
Uninucleate condition
Multinucleate condition

Question 171 of 536

Q.23 A cell plate is laid down during

Cytokinesis
Interphase
Karyokinesis
None of these

Question 172 of 536

Q.24 Crossing over results the exchange of genetic material, which occurs between

Non-sister chromosomes
Sister chromatids
Non-homologous chromosome
Homologous chromosomes

Question 173 of 536

Q.25 The number of chromosome and the amount of DNA are changed in

Metaphase and M phase
Anaphase and S phase
Interphase and S phase
None of these

Question 174 of 536

Q.1 Mechanism of development was explained by

Hans Dietrisch
Spemann
Both a and b
Haemmerling

Question 175 of 536

Q.2 Intercalary meristems are of

Permanent nature
Temporary nature
Some are permanent some temporary
None of these

Question 176 of 536

Q.3 Cells of fibers and tracheids elongate during

Phase of cell division
Phase of cell elongation
Phase of cell maturation
Phase of cell differentiation

Question 177 of 536

Q.4 Typical plant growth shows _________ curve.

J-shaped
S-shaped
I-shaped
Parabolic

Question 178 of 536

Q.5 Exponential growth of the plants is express as W1 = W0 ert r represents

ability of the plant to produce new cells
efficiency index
relative growth rate
all of the above

Question 179 of 536

Q.6 Opening of floral buds into flowers, is a type of:

Autonomic movement of variation
Autonomic movement of locomotion
Autonomic movement of growth
Paratonic movement of growth

Question 180 of 536

Q.7 Which one is incorrect?

Epiblast is presumptive ectoderm and mesoderm
Hypoblast is presumptive endoderm
Hypoblast is presumptive mesoderm
Upper layer of cells in blastoderm is epiblast

Question 181 of 536

Q.8 The stage of rapid cell division just after fertilization is

Organogenesis
Cleavage
Gastrulation
Growth

Question 182 of 536

Q.9 Which one of the followings is a gaseous plant hormone?

Ethylene
Gibberellin
IAA
Abscisic acid

Question 183 of 536

Q.10 To prevent over – ripening, bananas should be

given a dip in ascorbic acid
maintained at room temperature
refrigerated
stored at the top of refrigerator

Question 184 of 536

Q.11 Growth in dorsiventral leaf is measured in terms of

length of leaf
increase in cell number
surface area increase
none of these

Question 185 of 536

Q.12 Plants grow throughout their life due to

presence of meristems
presence of vascular cambium
presence of xylem and phloem
presence of tracheids

Question 186 of 536

Q.13 Mechanism of development was explained by

Hans Dietrisch
Spemann
Both a and b
Haemmerling

Question 187 of 536

Q.14 The ability to regain or recover the lost or injured part of body is

Aging
Regeneration
Abnormal development
Primary inductio

Question 188 of 536

Q.15 Which growth hormone accerlates the malting process in brewing industry?

Auxins
Gibberellins
Ethylene
Cytokinins

Question 189 of 536

Q.16 Which plant growth regulator is the derivative of carotenoids?

Auxin
Gibberelic acid
Cytokinin
Abscisic acid

Question 190 of 536

Q.17 Typical plant growth shows _________ curve.

J-shaped
S-shaped
I-shaped
Parabolic

Question 191 of 536

Q.18 Mobilisation of stored food in germinating seeds is triggered by

auxins
cytokinins
gibberellins
ethylene

Question 192 of 536

Q.19 Cavity formed between somatic and splanchnic mesoderm is called

Gastrocoele
Blastocoele
Coelom
Neurocoele

Question 193 of 536

Q.20 IAA is naturally occurring plant hormone called

Gibberlin
Auxin
Cytokinin
Absicic acid

Question 194 of 536

Q.21 Auxin is synthesised from in apical meristem from amino acid

Isoleucine
Methionine
Niacin
Tryptophan

Question 195 of 536

Q.22 Growth regulator which induces parthenocarpy

IAA
ABA
Cytokinin
Ethylene

Question 196 of 536

Q.23 Formation of seedless fruit without act of fertilisation

Parthenocarpy
pseudocarpy
Apomixis
Parthenogenesis

Question 197 of 536

Q.24 The major site for production of gibberellin is

Embryos
Roots
Young leaves
All of these

Question 198 of 536

Q.25 Gibberellin is isolated from

Brian et al
Went
Yabuta
Kurosawa

Question 199 of 536

Q.1 Mechanism of development was explained by

Hans Dietrisch
Spemann
Both a and b
Haemmerling

Question 200 of 536

Q.2 Intercalary meristems are of

Permanent nature
Temporary nature
Some are permanent some temporary
None of these

Question 201 of 536

Q.3 Cells of fibers and tracheids elongate during

Phase of cell division
Phase of cell elongation
Phase of cell maturation
Phase of cell differentiation

Question 202 of 536

Q.4 Typical plant growth shows _________ curve.

J-shaped
S-shaped
I-shaped
Parabolic

Question 203 of 536

Q.5 Exponential growth of the plants is express as W1 = W0 ert r represents

ability of the plant to produce new cells
efficiency index
relative growth rate
all of the above

Question 204 of 536

Q.6 Opening of floral buds into flowers, is a type of:

Autonomic movement of variation
Autonomic movement of locomotion
Autonomic movement of growth
Paratonic movement of growth

Question 205 of 536

Q.7 Which one is incorrect?

Epiblast is presumptive ectoderm and mesoderm
Hypoblast is presumptive endoderm
Hypoblast is presumptive mesoderm
Upper layer of cells in blastoderm is epiblast

Question 206 of 536

Q.8 The stage of rapid cell division just after fertilization is

Organogenesis
Cleavage
Gastrulation
Growth

Question 207 of 536

Q.9 Which one of the followings is a gaseous plant hormone?

Ethylene
Gibberellin
IAA
Abscisic acid

Question 208 of 536

Q.10 To prevent over – ripening, bananas should be

given a dip in ascorbic acid
maintained at room temperature
refrigerated
stored at the top of refrigerator

Question 209 of 536

Q.11 Growth in dorsiventral leaf is measured in terms of

length of leaf
increase in cell number
surface area increase
none of these

Question 210 of 536

Q.12 Plants grow throughout their life due to

presence of meristems
presence of vascular cambium
presence of xylem and phloem
presence of tracheids

Question 211 of 536

Q.13 Mechanism of development was explained by

Hans Dietrisch
Spemann
Both a and b
Haemmerling

Question 212 of 536

Q.14 The ability to regain or recover the lost or injured part of body is

Aging
Regeneration
Abnormal development
Primary inductio

Question 213 of 536

Q.15 Which growth hormone accerlates the malting process in brewing industry?

Auxins
Gibberellins
Ethylene
Cytokinins

Question 214 of 536

Q.16 Which plant growth regulator is the derivative of carotenoids?

Auxin
Gibberelic acid
Cytokinin
Abscisic acid

Question 215 of 536

Q.17 Typical plant growth shows _________ curve.

J-shaped
S-shaped
I-shaped
Parabolic

Question 216 of 536

Q.18 Mobilisation of stored food in germinating seeds is triggered by

auxins
cytokinins
gibberellins
ethylene

Question 217 of 536

Q.19 Cavity formed between somatic and splanchnic mesoderm is called

Gastrocoele
Blastocoele
Coelom
Neurocoele

Question 218 of 536

Q.20 IAA is naturally occurring plant hormone called

Gibberlin
Auxin
Cytokinin
Absicic acid

Question 219 of 536

Q.21 Auxin is synthesised from in apical meristem from amino acid

Isoleucine
Methionine
Niacin
Tryptophan

Question 220 of 536

Q.22 Growth regulator which induces parthenocarpy

IAA
ABA
Cytokinin
Ethylene

Question 221 of 536

Q.23 Formation of seedless fruit without act of fertilisation

Parthenocarpy
pseudocarpy
Apomixis
Parthenogenesis

Question 222 of 536

Q.24 The major site for production of gibberellin is

Embryos
Roots
Young leaves
All of these

Question 223 of 536

Q.25 Gibberellin is isolated from

Brian et al
Went
Yabuta
Kurosawa

Question 224 of 536

Q.1 R.Q is ratio of

CO2 produced to substarate consumed
CO2 produced to O2 consumed
oxygen consumed to CO2 produced
oxygen consumed to water produced

Question 225 of 536

Q.2 Angiosperm pollen is generally released at the

1 – celled stage
2 – celled stage
3 – celled stage
male gamete formation stage

Question 226 of 536

Q.3 The complete oxidation of pyruvate take place in

cell cytoplasm
inner mitochondrial membrane
mitochondrial matrix
nucleus

Question 227 of 536

Q.4 Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol

Pyruvic acid decarboxylase
Alcohol dehydrogenase
None of these
Both of these

Question 228 of 536

Q.5 TCA cycle was discovered by

Otto Meyerhof
Hans Kreb
Gustav Embden
All of these

Question 229 of 536

Q.6 Which one of the following describes the spikelet of a cereal or grass plant

inferior ovary
dehiscent fruit
pair of glumes
fused calyx

Question 230 of 536

Q.7 Malacophily means

pollination by wind
pollination by water
pollination by insects
pollination by snails

Question 231 of 536

Q.8 Herkogamy is a contrivance for

allogamy
autogamy
chasmogamy
cleistogamy

Question 232 of 536

Q.9 Out of 36 ATP molecules produced per glucose molecule during respiration

2 are produced outside glycolysis and 34 during repiratory chain
2 are produced outside mitochondria and 34 inside the mitochondria
all the formed inside mitochondria
2 during glycolysis and 34 during kreds cycle

Question 233 of 536

Q.10 Complete the reaction. _________ + O2 → CO2 + _______ + Energy

C6H12O6, 2H2O
C12H22O11, 6H2O
C6H12O6, 6H2O
C12H22O11, 11H2O

Question 234 of 536

Q.11 The significant morphological feature of passion flower is the presence of

numerous corolla
androphore
gynophore
androgynophore

Question 235 of 536

Q.12 The final electron acceptor in electron transport chain is

Cytochrome C
FADH
NADH
oxygen

Question 236 of 536

Q.13 Which of the following acts as mobile carrier for transfer of electrons between complex III and complex IV?

Cytochrome c
cytochrome a3
cytochrome a
FADH2

Question 237 of 536

Q.14 Aleurone layer takes part in

protection of delicate embryo
enzyme synthesis
transfer of food to cotyledons
transfer of food from cotyledons to embryo tips

Question 238 of 536

Q.15 A characteristic of drupe is

fleshy seed coat
stony pericarp
stony mesocarp
stony endocarp

Question 239 of 536

Q.16 Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is know as

TCA pathway
Glycolysis
Hms pathway
Glycolysis

Question 240 of 536

Q.17 End product of glycolysis is

acetyl Coenzyme A
PEP
pyruvate
OAA

Question 241 of 536

Q.18 Respiratory enzymes are located in

mitochondrial matrix
Cristae
perimitochondrial space
outer membrane

Question 242 of 536

Q.19 Respiratory quotient of carbohydrates is

0.9
1.2
1
0

Question 243 of 536

Q.20 One molecule of glucose yields ___ ATP molecules in aerobic respiration.

2
16
38
42

Question 244 of 536

Q.21 When one glucose molecule is completely oxidised, it changes:

36 ADP molecules into 36 ATP molecules
38 ADP molecules into 38 ATP molecules
30 ADP molecules into 30 ATP molecules
32 ADP molecules into 32 ATP molecules

Question 245 of 536

Q.22 Most of the energy of the carbohydrates is released by oxidation when

Pyruvic acid is converted into CO2 and H2O
Pyruvic acid is converted into acetyl Co-A
Sugar is converted into pyruvic acid
Glucose is converted into alcohol and CO2

Question 246 of 536

Q.23 Acetyl CoA combine with oxalo-acetate in presence of condensing enzyme citrate synthase to form 6-C compound called

Malic acid
Tartaric acid
Pyruvic acid
Citric acid

Question 247 of 536

Q.24 Number of oxygen atoms required for aerobic oxidation of one pyruvate

10
8
5
12

Question 248 of 536

Q.25 Most of the enzymes of the TCA cycle are present in

Intermembrane space of mitochondria
Mitochondrial matrix
Inner membrane of mitochondria
Cytoplasm

Question 249 of 536

Q.1 R.Q is ratio of

CO2 produced to substarate consumed
CO2 produced to O2 consumed
oxygen consumed to CO2 produced
oxygen consumed to water produced

Question 250 of 536

Q.2 Angiosperm pollen is generally released at the

1 – celled stage
2 – celled stage
3 – celled stage
male gamete formation stage

Question 251 of 536

Q.3 The complete oxidation of pyruvate take place in

cell cytoplasm
inner mitochondrial membrane
mitochondrial matrix
nucleus

Question 252 of 536

Q.4 Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol

Pyruvic acid decarboxylase
Alcohol dehydrogenase
None of these
Both of these

Question 253 of 536

Q.5 TCA cycle was discovered by

Otto Meyerhof
Hans Kreb
Gustav Embden
All of these

Question 254 of 536

Q.6 Which one of the following describes the spikelet of a cereal or grass plant

inferior ovary
dehiscent fruit
pair of glumes
fused calyx

Question 255 of 536

Q.7 Malacophily means

pollination by wind
pollination by water
pollination by insects
pollination by snails

Question 256 of 536

Q.8 Herkogamy is a contrivance for

allogamy
autogamy
chasmogamy
cleistogamy

Question 257 of 536

Q.9 Out of 36 ATP molecules produced per glucose molecule during respiration

2 are produced outside glycolysis and 34 during repiratory chain
2 are produced outside mitochondria and 34 inside the mitochondria
all the formed inside mitochondria
2 during glycolysis and 34 during kreds cycle

Question 258 of 536

Q.10 Complete the reaction. _________ + O2 → CO2 + _______ + Energy

C6H12O6, 2H2O
C12H22O11, 6H2O
C6H12O6, 6H2O
C12H22O11, 11H2O

Question 259 of 536

Q.11 The significant morphological feature of passion flower is the presence of

numerous corolla
androphore
gynophore
androgynophore

Question 260 of 536

Q.12 The final electron acceptor in electron transport chain is

Cytochrome C
FADH
NADH
oxygen

Question 261 of 536

Q.13 Which of the following acts as mobile carrier for transfer of electrons between complex III and complex IV?

Cytochrome c
cytochrome a3
cytochrome a
FADH2

Question 262 of 536

Q.14 Aleurone layer takes part in

protection of delicate embryo
enzyme synthesis
transfer of food to cotyledons
transfer of food from cotyledons to embryo tips

Question 263 of 536

Q.15 A characteristic of drupe is

fleshy seed coat
stony pericarp
stony mesocarp
stony endocarp

Question 264 of 536

Q.16 Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is know as

TCA pathway
Glycolysis
Hms pathway
Glycolysis

Question 265 of 536

Q.17 End product of glycolysis is

acetyl Coenzyme A
PEP
pyruvate
OAA

Question 266 of 536

Q.18 Respiratory enzymes are located in

mitochondrial matrix
Cristae
perimitochondrial space
outer membrane

Question 267 of 536

Q.19 Respiratory quotient of carbohydrates is

0.9
1.2
1
0

Question 268 of 536

Q.20 One molecule of glucose yields ___ ATP molecules in aerobic respiration.

2
16
38
42

Question 269 of 536

Q.21 When one glucose molecule is completely oxidised, it changes:

36 ADP molecules into 36 ATP molecules
38 ADP molecules into 38 ATP molecules
30 ADP molecules into 30 ATP molecules
32 ADP molecules into 32 ATP molecules

Question 270 of 536

Q.22 Most of the energy of the carbohydrates is released by oxidation when

Pyruvic acid is converted into CO2 and H2O
Pyruvic acid is converted into acetyl Co-A
Sugar is converted into pyruvic acid
Glucose is converted into alcohol and CO2

Question 271 of 536

Q.23 Acetyl CoA combine with oxalo-acetate in presence of condensing enzyme citrate synthase to form 6-C compound called

Malic acid
Tartaric acid
Pyruvic acid
Citric acid

Question 272 of 536

Q.24 Number of oxygen atoms required for aerobic oxidation of one pyruvate

10
8
5
12

Question 273 of 536

Q.25 Most of the enzymes of the TCA cycle are present in

Intermembrane space of mitochondria
Mitochondrial matrix
Inner membrane of mitochondria
Cytoplasm

Question 274 of 536

Q.1 The rate of photosynthesis is controlled by

the rate of light reaction
the rate of dark reaction
the rates of both light and dark reactions
none of the above

Question 275 of 536

Q.2 The end product of the Calvin cycle is ______.

RuBP
PGAL
PGA
ADP + NADP

Question 276 of 536

Q.3 The primary carbon dioxide acceptor in C4 cycle is

malic acid
phosphoenol pyruvate
rubisco
aspartic acid

Question 277 of 536

Q.4 The law of limiting factor was given by

Calvin
Blackman
Priestley
None of these

Question 278 of 536

Q.5 The metabolic pathway which produces carbohydrate is

Calvin cycle
Glycolysis
Cyclic electron pathway
Krebs cycle

Question 279 of 536

Q.6 Manganese is required in

Chlorophyll synthesis
Nucleic acid synthesis
Plant cell wall formation
Photolysis of water during photosynthesis

Question 280 of 536

Q.7 Oxidative phosphorylation refers to

Anaerobic production of ATP
The citric acid cycle production of ATP
Production of ATP by chemiosmosis
Alcoholic fermentation

Question 281 of 536

Q.8 Which of the following is not an accessory pigment?

Carotene
Chlorophyll a
Chlorophyll b
Xanthophyll

Question 282 of 536

Q.9 Besides water and CO2, which is more essential a raw material for food formation

light
oxygen
NAD
mineral salt

Question 283 of 536

Q.10 In actively gro – wing young plants, the best data for estimating the rate of photosynthesis would be

ratio of oxygen evolved to carbon dioxide absorbed
increase in fresh weight
increase in dry weight
increase in carbohydrate

Question 284 of 536

Q.11 Discovery of Emerson effect has already shown the

two distinct photochemical reactions
light and dark reactions of photosynthesis
photophosphorylation
photorespiration

Question 285 of 536

Q.12 Translocation of sugar in flowering plants occurs in the form of

glucose
sucrose
starch
maltose

Question 286 of 536

Q.13 Where are thylakoids and grana located?

Lysosomes
Mitochondria
Chloroplasts
Golgi apparatus

Question 287 of 536

Q.14 Who enunciated the law of limiting factor for photosynthesis?

Robert Emerson
Ruben
Blackman
Calvin

Question 288 of 536

Q.15 Which one of the following statement is true for ATP?

ATP is prosthetic part of an enzyme
ATP is an enzyme
ATP is organic ions of enzyme
ATP is a Co-enzyme

Question 289 of 536

Q.16 Kranz anatomy is a feature of

C3 plants
CAM plants
C4 plants
All of these

Question 290 of 536

Q.17 Which of the following is a 4-carbon compound?

Oxaloacetic acid
Phosphoglyceric acid
Ribulose biphosphate
Phosphoenolpyruvate

Question 291 of 536

Q.18 Which of the following process (C4 cycle) occurs in bundle sheath cells?

Regeneration
Fixation
Carboxylation
Decarboxylation

Question 292 of 536

Q.19 Light reactions of photosynthesis occurs in

stroma
thylakoid
grana
cytoplasm of cell

Question 293 of 536

Q.20 Water stress causes

opening of stomata
increase in metabolic rate
wilting of leaves
lesser availability of carbon dioxide

Question 294 of 536

Q.21 During photochemical reaction of photosynthesis–

liberation of O2 takes place
Formation of ATP and NADPH2 take place
Liberation of O2, formation of ATP, and NADPH2 takes place
Assimilation of CO2 takes place

Question 295 of 536

Q.22 In the half-leaf experiment of photosynthesis, KOH solution is used because

It provides O2 to the leaf.
It provides moisture to the leaf.
t helps in CO2 fixation
It absorbs CO2

Question 296 of 536

Q.23 Structurally, chlorophyll a and b are different as

Chl a has a methyl group and Chl b has an aldehyde group.
Chl a has an aldehyde group and Chl b has a methyl group.
Chl a has an ethyl group and Chl b has an aldehyde group
Chl a has a carboxyl group and Chl b has an aldehyde group.

Question 297 of 536

Q.24 Fixation of one CO2 molecule through Calvin cycle requires:

1 ATP and 2NADPH2
2ATP and 2NADPH2
3ATP and 2NADPH2
2ATP and 1NADPH2

Question 298 of 536

Q.25 Which one of the following statements about cytochrome P-450 is wrong?

It is a colored cell
It is an enzyme involved in oxidation reaction
It has an important role in metabolism
It contains iron

Question 299 of 536

Q.1 The rate of photosynthesis is controlled by

the rate of light reaction
the rate of dark reaction
the rates of both light and dark reactions
none of the above

Question 300 of 536

Q.2 The end product of the Calvin cycle is ______.

RuBP
PGAL
PGA
ADP + NADP

Question 301 of 536

Q.3 The primary carbon dioxide acceptor in C4 cycle is

malic acid
phosphoenol pyruvate
rubisco
aspartic acid

Question 302 of 536

Q.4 The law of limiting factor was given by

Calvin
Blackman
Priestley
None of these

Question 303 of 536

Q.5 The metabolic pathway which produces carbohydrate is

Calvin cycle
Glycolysis
Cyclic electron pathway
Krebs cycle

Question 304 of 536

Q.6 Manganese is required in

Chlorophyll synthesis
Nucleic acid synthesis
Plant cell wall formation
Photolysis of water during photosynthesis

Question 305 of 536

Q.7 Oxidative phosphorylation refers to

Anaerobic production of ATP
The citric acid cycle production of ATP
Production of ATP by chemiosmosis
Alcoholic fermentation

Question 306 of 536

Q.8 Which of the following is not an accessory pigment?

Carotene
Chlorophyll a
Chlorophyll b
Xanthophyll

Question 307 of 536

Q.9 Besides water and CO2, which is more essential a raw material for food formation

light
oxygen
NAD
mineral salt

Question 308 of 536

Q.10 In actively gro – wing young plants, the best data for estimating the rate of photosynthesis would be

ratio of oxygen evolved to carbon dioxide absorbed
increase in fresh weight
increase in dry weight
increase in carbohydrate

Question 309 of 536

Q.11 Discovery of Emerson effect has already shown the

two distinct photochemical reactions
light and dark reactions of photosynthesis
photophosphorylation
photorespiration

Question 310 of 536

Q.12 Translocation of sugar in flowering plants occurs in the form of

glucose
sucrose
starch
maltose

Question 311 of 536

Q.13 Where are thylakoids and grana located?

Lysosomes
Mitochondria
Chloroplasts
Golgi apparatus

Question 312 of 536

Q.14 Who enunciated the law of limiting factor for photosynthesis?

Robert Emerson
Ruben
Blackman
Calvin

Question 313 of 536

Q.15 Which one of the following statement is true for ATP?

ATP is prosthetic part of an enzyme
ATP is an enzyme
ATP is organic ions of enzyme
ATP is a Co-enzyme

Question 314 of 536

Q.16 Kranz anatomy is a feature of

C3 plants
CAM plants
C4 plants
All of these

Question 315 of 536

Q.17 Which of the following is a 4-carbon compound?

Oxaloacetic acid
Phosphoglyceric acid
Ribulose biphosphate
Phosphoenolpyruvate

Question 316 of 536

Q.18 Which of the following process (C4 cycle) occurs in bundle sheath cells?

Regeneration
Fixation
Carboxylation
Decarboxylation

Question 317 of 536

Q.19 Light reactions of photosynthesis occurs in

stroma
thylakoid
grana
cytoplasm of cell

Question 318 of 536

Q.20 Water stress causes

opening of stomata
increase in metabolic rate
wilting of leaves
lesser availability of carbon dioxide

Question 319 of 536

Q.21 During photochemical reaction of photosynthesis–

liberation of O2 takes place
Formation of ATP and NADPH2 take place
Liberation of O2, formation of ATP, and NADPH2 takes place
Assimilation of CO2 takes place

Question 320 of 536

Q.22 In the half-leaf experiment of photosynthesis, KOH solution is used because

It provides O2 to the leaf.
It provides moisture to the leaf.
t helps in CO2 fixation
It absorbs CO2

Question 321 of 536

Q.23 Structurally, chlorophyll a and b are different as

Chl a has a methyl group and Chl b has an aldehyde group.
Chl a has an aldehyde group and Chl b has a methyl group.
Chl a has an ethyl group and Chl b has an aldehyde group
Chl a has a carboxyl group and Chl b has an aldehyde group.

Question 322 of 536

Q.24 Fixation of one CO2 molecule through Calvin cycle requires:

1 ATP and 2NADPH2
2ATP and 2NADPH2
3ATP and 2NADPH2
2ATP and 1NADPH2

Question 323 of 536

Q.25 Which one of the following statements about cytochrome P-450 is wrong?

It is a colored cell
It is an enzyme involved in oxidation reaction
It has an important role in metabolism
It contains iron

Question 324 of 536

Q.1 In plants, a common symptom caused by deficiency of P, K, Ca and Mg is the

bending of leaf tip
formation of anthocyanins
poor development of vasculature
appearance of dead necrotic tissue

Question 325 of 536

Q.2 Function of zinc is

Closing of stomata
Biosynthesis of 3-IAA
Synthesis of chlorophyll
Oxidation of carbohydrate

Question 326 of 536

Q.3 Which of the following is a group of micronutrients?

Ca, Zn, B
Fe, Mn, Cu
Cl, C, Ca
Ni, Mo, H

Question 327 of 536

Q.4 The process of conversion of NO2– to N2 is called

nitrification
ammonification
denitrification
nitrogen fixation

Question 328 of 536

Q.5 The formation of first stable product of nitrogen fixation is catalysed by enzyme

dehydrogenase
nitrogenase
isomerase
none of these

Question 329 of 536

Q.6 Manganese toxicity leads to deficiency of

iron
calcium
magnesium
all of the above

Question 330 of 536

Q.7 Chlorosis will occur if a plant is grown in

dark
shade
strong light
Fe – free medium

Question 331 of 536

Q.8 Choose the correct function of magnesium

It is a constituent of several coenzyme
It activates the enzymes of respiration and photosynthesis.
It activates enzyme catalase
It helps in maintaining anion-cation balance

Question 332 of 536

Q.9 Mineral salts which are absorbed by the roots from soil are in the form of

Dilute solution
Very concentrated solution
Concentrated solution
Very dilute solution

Question 333 of 536

Q.10 Which one of the following mineral elements plays an in biological nitrogen fixation?

Copper
Manganese
Zinc
Molybdenum

Question 334 of 536

Q.11 Oxygen scavangers present in root nodules of legumes is

haemoglobin
leg haemoglobin
cyano haemoglobin
none of these

Question 335 of 536

Q.12 Which one of the following is not a micronutrient?

Magnesium
Molybdenum
Boron
Zinc

Question 336 of 536

Q.13 Which of the following is not a macronutrient

iron
calcium
manganese
phosphorus

Question 337 of 536

Q.14 Insectivorous plants grow where

There is carbohydrate deficient soil
There is nitrogen deficient soil
Vitamin c is required
Hormones are required

Question 338 of 536

Q.15 Phytotron is meant for

Controlled humidity
Induction of mutations
Controlled irradiation
Growing plants under controlled environment

Question 339 of 536

Q.16 Toxicity of which element leads to the appearance of brown spots on leaves

Mg
Mn
Fe
Cu

Question 340 of 536

Q.17 Presence of phosphorus

brings about healthy root growth
promotes fruit ripening
retards protein formation
none

Question 341 of 536

Q.18 Which element is required for opening and closing of stomata?

P
K
Ca
Na

Question 342 of 536

Q.19 Exanthema is due to deficiency of

B
Mo
Mn
Cu

Question 343 of 536

Q.20 NPK denotes

Nitrogen, Protein, Kinetin
Nitrogen, Protein, Potassium
Nitrogen, Potassium, kinetin
Nitrogen, Phosphorus, Potassium

Question 344 of 536

Q.21 The nitrogen exists as two nitrogen atoms joined by

Di covalent bonds
tetra covalent bonds
triple covalent bonds
monocovalent bond

Question 345 of 536

Q.22 Biological nitrogen fixation was discovered by

Gericke
Nehar and Sakmann
Liebig
Winograndsky

Question 346 of 536

Q.23 The enzyme involved in biological nitrogen fixation are

Carboxylase
Oxygenase
Dehydrogenase
Nitrogenase

Question 347 of 536

Q.24 The requirement of micro nutrient are always low if the concentration increases it leads to

deficiency symptoms
Cell differentiation
toxicity
Cell elongation

Question 348 of 536

Q.25 Analysis of xylem sap shows

presence of enzymes
presence of organic matter
presence of nutrients
presence of mineral salts

Question 349 of 536

Q.1 In plants, a common symptom caused by deficiency of P, K, Ca and Mg is the

bending of leaf tip
formation of anthocyanins
poor development of vasculature
appearance of dead necrotic tissue

Question 350 of 536

Q.2 Function of zinc is

Closing of stomata
Biosynthesis of 3-IAA
Synthesis of chlorophyll
Oxidation of carbohydrate

Question 351 of 536

Q.3 Which of the following is a group of micronutrients?

Ca, Zn, B
Fe, Mn, Cu
Cl, C, Ca
Ni, Mo, H

Question 352 of 536

Q.4 The process of conversion of NO2– to N2 is called

nitrification
ammonification
denitrification
nitrogen fixation

Question 353 of 536

Q.5 The formation of first stable product of nitrogen fixation is catalysed by enzyme

dehydrogenase
nitrogenase
isomerase
none of these

Question 354 of 536

Q.6 Manganese toxicity leads to deficiency of

iron
calcium
magnesium
all of the above

Question 355 of 536

Q.7 Chlorosis will occur if a plant is grown in

dark
shade
strong light
Fe – free medium

Question 356 of 536

Q.8 Choose the correct function of magnesium

It is a constituent of several coenzyme
It activates the enzymes of respiration and photosynthesis.
It activates enzyme catalase
It helps in maintaining anion-cation balance

Question 357 of 536

Q.9 Mineral salts which are absorbed by the roots from soil are in the form of

Dilute solution
Very concentrated solution
Concentrated solution
Very dilute solution

Question 358 of 536

Q.10 Which one of the following mineral elements plays an in biological nitrogen fixation?

Copper
Manganese
Zinc
Molybdenum

Question 359 of 536

Q.11 Oxygen scavangers present in root nodules of legumes is

haemoglobin
leg haemoglobin
cyano haemoglobin
none of these

Question 360 of 536

Q.12 Which one of the following is not a micronutrient?

Magnesium
Molybdenum
Boron
Zinc

Question 361 of 536

Q.13 Which of the following is not a macronutrient

iron
calcium
manganese
phosphorus

Question 362 of 536

Q.14 Insectivorous plants grow where

There is carbohydrate deficient soil
There is nitrogen deficient soil
Vitamin c is required
Hormones are required

Question 363 of 536

Q.15 Phytotron is meant for

Controlled humidity
Induction of mutations
Controlled irradiation
Growing plants under controlled environment

Question 364 of 536

Q.16 Toxicity of which element leads to the appearance of brown spots on leaves

Mg
Mn
Fe
Cu

Question 365 of 536

Q.17 Presence of phosphorus

brings about healthy root growth
promotes fruit ripening
retards protein formation
none

Question 366 of 536

Q.18 Which element is required for opening and closing of stomata?

P
K
Ca
Na

Question 367 of 536

Q.19 Exanthema is due to deficiency of

B
Mo
Mn
Cu

Question 368 of 536

Q.20 NPK denotes

Nitrogen, Protein, Kinetin
Nitrogen, Protein, Potassium
Nitrogen, Potassium, kinetin
Nitrogen, Phosphorus, Potassium

Question 369 of 536

Q.21 The nitrogen exists as two nitrogen atoms joined by

Di covalent bonds
tetra covalent bonds
triple covalent bonds
monocovalent bond

Question 370 of 536

Q.22 Biological nitrogen fixation was discovered by

Gericke
Nehar and Sakmann
Liebig
Winograndsky

Question 371 of 536

Q.23 The enzyme involved in biological nitrogen fixation are

Carboxylase
Oxygenase
Dehydrogenase
Nitrogenase

Question 372 of 536

Q.24 The requirement of micro nutrient are always low if the concentration increases it leads to

deficiency symptoms
Cell differentiation
toxicity
Cell elongation

Question 373 of 536

Q.25 Analysis of xylem sap shows

presence of enzymes
presence of organic matter
presence of nutrients
presence of mineral salts

Question 374 of 536

Q.1 Blood corpuscles are formed in the

Haversian canal
endosteum
red bone marrow
pancreas

Question 375 of 536

Q.2 Which of the following is absent in female frog?

Webbed feet
Copulatory pads
Tympanum
All are present

Question 376 of 536

Q.3 Osteoblasts are found in

blood
muscle
Bone
catrilage

Question 377 of 536

Q.4 Choose the incorrect statement.

Vascular system of frog is closed type.
Frogs have 4-chambered heart.
During aestivation and hibernation, skin acts as respiratory organ.
All the statements are correct

Question 378 of 536

Q.5 Which one of the four parts mentioned below is not part of a single uriniferous tubule ?

Bowman scapsule
Loop of Henle
Distal convoluted tubule
Collecting ducts

Question 379 of 536

Q.6 Ciliated epithelium is present in

fallopian tubes
blood vessels
mid brain
none of the above

Question 380 of 536

Q.7 The vascular tissue of blood is made up of

RBC
plasma
platelets
all of the above

Question 381 of 536

Q.8 Which membrane protects the eyes of frog in water?

Tympanum
Skin
Sebaceous
Nictitating

Question 382 of 536

Q.9 Fats are richly found in

alveolar tissue
lymph glands
adipose tissue
liver cells

Question 383 of 536

Q.10 The main function of the skin of frog is

the exchange of respiratory gases
the storage of fat
the storage of energy
to convert light vitamin D

Question 384 of 536

Q.11 The ciliated epithelium in our body may be found in

trachea
ureter
bile duct
intestines

Question 385 of 536

Q.12 Which one of the following is a scent gland of mammals?

Bartholin
Anal
Prostate
Adrenal

Question 386 of 536

Q.13 The characteristic of simple eqithelium is that

the cells are loosely placed
they are single – layered in thickness
cells are tightly packed with no intercelluar spaces
cells are generally ciliated

Question 387 of 536

Q.14 Spot the salivary gland in the following :

sublingual
adrenal
Brunners
lacrimal

Question 388 of 536

Q.15 Protein not found in the connective tissues is

actin
ossein
collagen
elastin

Question 389 of 536

Q.16 Tendons connect the following

bone to bone
muscle to muscle
cartilage to muscle
bone to muscle

Question 390 of 536

Q.17 Frogs are beneficial to us because

they protect crops
they links food web
they are food to man.
all of these

Question 391 of 536

Q.18 Which membrane protects the eyes of frog in water?

Tympanum
Skin
Sebaceous
Nictitating

Question 392 of 536

Q.19 Which of the following helps in locomotion of earthworms?

Clitellum
Setae
Intersegmental grooves
Nephridiophores

Question 393 of 536

Q.20 Which is not a part of reproductive system of female cockroach?

Phallic gland
Vestibulum
Gonapophyses
Collaterial glands

Question 394 of 536

Q.21 Glands of Zeis are associated with eyelashes. These are modified

Sweat glands
Mucous glands
Sebaceous glands
Sudoriferous glands

Question 395 of 536

Q.22 The most abundant type of animal tissue in the complex animals is

Muscle tissue
Nervous tissue
Connective tissue
Epithelial tissue

Question 396 of 536

Q.23 The epithelium found in the lining layer of stomach and intestine is

Squamous epithelium
Cuboidal epithelium
Columnar epithelium
Ciliated columnar epithelium

Question 397 of 536

Q.24 In mammals maximum energy is lost by the

Respiration
Urine
Skin
Stool

Question 398 of 536

Q.25 Which one of the following contains the largest quantity of extra-cellular material

Striated muscle
Areolar tissue
Stratified epithelium
Myelinated nerve fibres

Question 399 of 536

Q.1 Blood corpuscles are formed in the

Haversian canal
endosteum
red bone marrow
pancreas

Question 400 of 536

Q.2 Which of the following is absent in female frog?

Webbed feet
Copulatory pads
Tympanum
All are present

Question 401 of 536

Q.3 Osteoblasts are found in

blood
muscle
Bone
catrilage

Question 402 of 536

Q.4 Choose the incorrect statement.

Vascular system of frog is closed type.
Frogs have 4-chambered heart.
During aestivation and hibernation, skin acts as respiratory organ.
All the statements are correct

Question 403 of 536

Q.5 Which one of the four parts mentioned below is not part of a single uriniferous tubule ?

Bowman scapsule
Loop of Henle
Distal convoluted tubule
Collecting ducts

Question 404 of 536

Q.6 Ciliated epithelium is present in

fallopian tubes
blood vessels
mid brain
none of the above

Question 405 of 536

Q.7 The vascular tissue of blood is made up of

RBC
plasma
platelets
all of the above

Question 406 of 536

Q.8 Which membrane protects the eyes of frog in water?

Tympanum
Skin
Sebaceous
Nictitating

Question 407 of 536

Q.9 Fats are richly found in

alveolar tissue
lymph glands
adipose tissue
liver cells

Question 408 of 536

Q.10 The main function of the skin of frog is

the exchange of respiratory gases
the storage of fat
the storage of energy
to convert light vitamin D

Question 409 of 536

Q.11 The ciliated epithelium in our body may be found in

trachea
ureter
bile duct
intestines

Question 410 of 536

Q.12 Which one of the following is a scent gland of mammals?

Bartholin
Anal
Prostate
Adrenal

Question 411 of 536

Q.13 The characteristic of simple eqithelium is that

the cells are loosely placed
they are single – layered in thickness
cells are tightly packed with no intercelluar spaces
cells are generally ciliated

Question 412 of 536

Q.14 Spot the salivary gland in the following :

sublingual
adrenal
Brunners
lacrimal

Question 413 of 536

Q.15 Protein not found in the connective tissues is

actin
ossein
collagen
elastin

Question 414 of 536

Q.16 Tendons connect the following

bone to bone
muscle to muscle
cartilage to muscle
bone to muscle

Question 415 of 536

Q.17 Frogs are beneficial to us because

they protect crops
they links food web
they are food to man.
all of these

Question 416 of 536

Q.18 Which membrane protects the eyes of frog in water?

Tympanum
Skin
Sebaceous
Nictitating

Question 417 of 536

Q.19 Which of the following helps in locomotion of earthworms?

Clitellum
Setae
Intersegmental grooves
Nephridiophores

Question 418 of 536

Q.20 Which is not a part of reproductive system of female cockroach?

Phallic gland
Vestibulum
Gonapophyses
Collaterial glands

Question 419 of 536

Q.21 Glands of Zeis are associated with eyelashes. These are modified

Sweat glands
Mucous glands
Sebaceous glands
Sudoriferous glands

Question 420 of 536

Q.22 The most abundant type of animal tissue in the complex animals is

Muscle tissue
Nervous tissue
Connective tissue
Epithelial tissue

Question 421 of 536

Q.23 The epithelium found in the lining layer of stomach and intestine is

Squamous epithelium
Cuboidal epithelium
Columnar epithelium
Ciliated columnar epithelium

Question 422 of 536

Q.24 In mammals maximum energy is lost by the

Respiration
Urine
Skin
Stool

Question 423 of 536

Q.25 Which one of the following contains the largest quantity of extra-cellular material

Striated muscle
Areolar tissue
Stratified epithelium
Myelinated nerve fibres

Question 424 of 536

Q.1 Radula is found in

Pila sp
Chiton sp
Lamellidens sp
Pinctada sp

Question 425 of 536

Q.2 Sharks, skates, and rays are also called ______ fishes

Jawless
Bony
Cartilaginous
Freshwater

Question 426 of 536

Q.3 Turtles are

Arthropods
Pisces
Reptiles
Molluscs

Question 427 of 536

Q.4 The clam nervous system is composed of

labial palps
one pair of ganglia
two pairs of ganglia
three pairs of ganglia

Question 428 of 536

Q.5 Choose the correct pair.

Hippocampus – 3-chambered heart
Rana – 2-chambered heart
Crocodilus – 4-chambered heart
Pavo – 3-chambered heart

Question 429 of 536

Q.6 Who wrote the book Systema Naturae?

Lamarck
Darwin
Wallace
Linnaeus

Question 430 of 536

Q.7 Which of the following statement is correct?

Platypus lays eggs
Camels have biconcave RBCs
Whales respire by gills
Bats do not fly

Question 431 of 536

Q.8 Osteichthyes belongs to

class amphibia
super class pisces
super class tetrapoda
division agnatha

Question 432 of 536

Q.9 Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

Mammalia : give birth to young ones
Reptilia : possess 3-chambered heart with one incompletely divided ventricle
Chordata : possess a mouth provided with an upper and a lower jaw
Chondrichthyes : possess cartilaginous endoskeleton

Question 433 of 536

Q.10 Which one of the following phylum is characterized by absence of true coelom?

Annelida
Mollusca
Echinodermata
Nematoda

Question 434 of 536

Q.11 Which of the following is a pseudocoelomate?

Platyhelminthes
Aschelminthes
Mollusca
Hemi-chordates

Question 435 of 536

Q.12 Which kind of symmetry occurs in sea anemone?

Bilateral
Radial
Asymmetry
None of these

Question 436 of 536

Q.13 Phylum that doesnt have a true coelom is

Platyhelminthes
Annelida
Echinoderms
Arthropoda

Question 437 of 536

Q.14 Male mosquitoes usually feed on

Garbage
Human blood
Flower sap
All of the above

Question 438 of 536

Q.15 Bed Bugs contribute to the spread of

Typhoid
Yellow fever
Typhus
Trench fever

Question 439 of 536

Q.16 Which one of the following is NOT a characteristic of phylum Annelida?

Ventral nerve cord
Closed circulatory system
Segmentation
Pseudocoelom

Question 440 of 536

Q.17 ______ are devoid of respiratory, excretory and circulatory organs.

Threadworms
Sponges
Tapeworms
Liver fluke

Question 441 of 536

Q.18 Fluke infections are diseases of the _______ in humans

Blood
Bile
Digestive tract
Lung

Question 442 of 536

Q.19 Water-Vascular system is found in

Sea-anemone
Sea-pen
Sea-cucumber
Sea-horse

Question 443 of 536

Q.20 Order Rhynchocephalia consists of

Tuataras
Lizards and snakes
Turtles and tortoises
Crocodiles, alligators, caimans

Question 444 of 536

Q.21 One of the following are not formed in mosquito

Sporozoites
Ookinetes
Oocystes
Merozoites

Question 445 of 536

Q.22 The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the phylum

Annelida
Mollusca
Cnidaria
Echinodermata

Question 446 of 536

Q.23 Which blood vessel carry larva of Ascaris in lungs

Pulmonary vein
Hepatic vein
Carotid artery
Pulmonary artery

Question 447 of 536

Q.24 the excretory product of Ascaris is

Urea
Ammonia
Both A and B
None

Question 448 of 536

Q.25 Which one of the following groups of animals is bilaterally symmetrical and triploblastic

Aschelminthes (round worms)
Ctenophores
Sponges
Coelenterates (Cnidarians)

Question 449 of 536

Q.1 Radula is found in

Pila sp
Chiton sp
Lamellidens sp
Pinctada sp

Question 450 of 536

Q.2 Sharks, skates, and rays are also called ______ fishes

Jawless
Bony
Cartilaginous
Freshwater

Question 451 of 536

Q.3 Turtles are

Arthropods
Pisces
Reptiles
Molluscs

Question 452 of 536

Q.4 The clam nervous system is composed of

labial palps
one pair of ganglia
two pairs of ganglia
three pairs of ganglia

Question 453 of 536

Q.5 Choose the correct pair.

Hippocampus – 3-chambered heart
Rana – 2-chambered heart
Crocodilus – 4-chambered heart
Pavo – 3-chambered heart

Question 454 of 536

Q.6 Who wrote the book Systema Naturae?

Lamarck
Darwin
Wallace
Linnaeus

Question 455 of 536

Q.7 Which of the following statement is correct?

Platypus lays eggs
Camels have biconcave RBCs
Whales respire by gills
Bats do not fly

Question 456 of 536

Q.8 Osteichthyes belongs to

class amphibia
super class pisces
super class tetrapoda
division agnatha

Question 457 of 536

Q.9 Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

Mammalia : give birth to young ones
Reptilia : possess 3-chambered heart with one incompletely divided ventricle
Chordata : possess a mouth provided with an upper and a lower jaw
Chondrichthyes : possess cartilaginous endoskeleton

Question 458 of 536

Q.10 Which one of the following phylum is characterized by absence of true coelom?

Annelida
Mollusca
Echinodermata
Nematoda

Question 459 of 536

Q.11 Which of the following is a pseudocoelomate?

Platyhelminthes
Aschelminthes
Mollusca
Hemi-chordates

Question 460 of 536

Q.12 Which kind of symmetry occurs in sea anemone?

Bilateral
Radial
Asymmetry
None of these

Question 461 of 536

Q.13 Phylum that doesnt have a true coelom is

Platyhelminthes
Annelida
Echinoderms
Arthropoda

Question 462 of 536

Q.14 Male mosquitoes usually feed on

Garbage
Human blood
Flower sap
All of the above

Question 463 of 536

Q.15 Bed Bugs contribute to the spread of

Typhoid
Yellow fever
Typhus
Trench fever

Question 464 of 536

Q.16 Which one of the following is NOT a characteristic of phylum Annelida?

Ventral nerve cord
Closed circulatory system
Segmentation
Pseudocoelom

Question 465 of 536

Q.17 ______ are devoid of respiratory, excretory and circulatory organs.

Threadworms
Sponges
Tapeworms
Liver fluke

Question 466 of 536

Q.18 Fluke infections are diseases of the _______ in humans

Blood
Bile
Digestive tract
Lung

Question 467 of 536

Q.19 Water-Vascular system is found in

Sea-anemone
Sea-pen
Sea-cucumber
Sea-horse

Question 468 of 536

Q.20 Order Rhynchocephalia consists of

Tuataras
Lizards and snakes
Turtles and tortoises
Crocodiles, alligators, caimans

Question 469 of 536

Q.21 One of the following are not formed in mosquito

Sporozoites
Ookinetes
Oocystes
Merozoites

Question 470 of 536

Q.22 The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the phylum

Annelida
Mollusca
Cnidaria
Echinodermata

Question 471 of 536

Q.23 Which blood vessel carry larva of Ascaris in lungs

Pulmonary vein
Hepatic vein
Carotid artery
Pulmonary artery

Question 472 of 536

Q.24 the excretory product of Ascaris is

Urea
Ammonia
Both A and B
None

Question 473 of 536

Q.25 Which one of the following groups of animals is bilaterally symmetrical and triploblastic

Aschelminthes (round worms)
Ctenophores
Sponges
Coelenterates (Cnidarians)

Question 474 of 536

Q.1 Which among the following does not exchange o2 with CO2 through simple diffusion

Earthworms
Earthworms
Sponges
Flatworms

Question 475 of 536

Q.2 Which among the following have well developed respiratory system

Cockroaches
Earthworms
Sponges
Mammals

Question 476 of 536

Q.3 How many lobes are present in right lung

2
5
3
4

Question 477 of 536

Q.4 Name a sound box which is responsible for sound production

Pharynx
Larynx
Epiglottis
None of the above

Question 478 of 536

Q.5 Thoracic chamber is dorsally formed by

Vertebral column
Sternum
Ribs
Diaphragm

Question 479 of 536

Q.6 Inspiration occurs if the pressure within the lungs is

More than atm pressure
Less tha atm pressure
Equal to atm pressure
None of the above

Question 480 of 536

Q.7 The part starting from external nostril upto terminal bronchioles is known as

Conducting part
Exchange part
Respiratory part
None of the above

Question 481 of 536

Q.8 What is the structural and functional unit of lungs

Bronchioles
Alveoli
Bronchi
Both a and c

Question 482 of 536

Q.9 On an average healthy human breathes how many times per minute

12-16
15-16
20-25
72

Question 483 of 536

Q.10 What is the inspiratory reserve volume

2500-3000 ml
500 ml
1000-1100 ml
None of the above

Question 484 of 536

Q.11 Volume air inspired or expired during normal respiration is known as

TV
IRV
ERV
RV

Question 485 of 536

Q.12 which among the following is measured by spirometer

Total lung capacity
FRC
RV
TV

Question 486 of 536

Q.13 Pressure contributed by an individual gas in a mixture of gas is known as

Partial pressure
Diffusion pressure
Osmotic pressure
None of the above

Question 487 of 536

Q.14 Solubility of CO2 is how many times higher than O2

10-15
30-40
20-21
20-25

Question 488 of 536

Q.15 What is the partial pressure of O2 in atmosphere

156
159
94
40

Question 489 of 536

Q.16 What is the partial pressure of O2 in deoxygenated blood

45
40
95
43

Question 490 of 536

Q.17 How many percent of co2 is carried by plasma in dissolved form

6
7
20-25
None of the above

Question 491 of 536

Q.18 How many percent of co2 is carried as bicarbonate

50
97
70
25

Question 492 of 536

Q.19 Every 100ml of deoxy blood delivers approx

2ml of co2 to alveoli
3 of co2 to alveoli
4ml of co2 to alveoli
7ml of co2 to alveoli

Question 493 of 536

Q.20 RBC contains very high quantity of which enzyme

Carbonic anhydrase
Lysosome
Ligase
None of the above

Question 494 of 536

Q.21 which among the following is caused due to decreased respiratory surface area

Astma
Emphysema
Sclerosis
None of the above

Question 495 of 536

Q.22 Whose role in respiratory rhythm regulation is insignificant

Co2
O2
Both a and b
None of the above

Question 496 of 536

Q.23 Pneumotaxic centre is present in which region of brain

Medulla
Hypothalamus
Pons
None of the above

Question 497 of 536

Q.24 Which type of curve is formed when percent of haemoglobin is plotted against po2

Straight line
Hyperbola
Sigmoid
Parabola

Question 498 of 536

Q.25 which among the following is responsible to shift o2 dissociation curve right

High Pco2
Low pco2
Low H+
None of the above

Question 499 of 536

Q.1 Which of the following are the most and the least electronegative elements in the periodic table?

Chlorine and Fluorine
Hydrogen and Helium
Carbon and Oxygen
Fluorine and Caesium

Question 500 of 536

Q.2 Which compound of mercury is used as antiseptic?

Mercuric sulphide
Mercuric oxide
Mercuric iodide
Mercuric chloride

Question 501 of 536

Q.3 Which among the following is major component of Gobar Gas?

Butane
Ethane
Propane
Methane

Question 502 of 536

Q.4 Which of the following is the essential element for batteries used in electric cars?

Lithium
Sodium
Magnesuium
Bromine

Question 503 of 536

Q.5 Which of the following is the essential element for batteries used in electric cars?

Lithium
Sodium
Magnesuium
Bromine

Question 504 of 536

Q.6 Calcium Magnesium Silicate is commonly called as?

Borax
Washing soda
Baking soda
Asbestos

Question 505 of 536

Q.7 Which among the following chemicals is used in Photography?

Pottasium chloride
Silver bromide
Sodium bromide
Magnesium chloride

Question 506 of 536

Q.8 Which of the following methods is used to purify Titanium metal?

Mond process
Hall-Heroult process
Van Arkel method
None of the above

Question 507 of 536

Q.9 Which of the following Group in the modern periodic table contains Halogens?

Group 17
Group 18
Group 1
Group 2

Question 508 of 536

Q.10 Which of the following quantum number is also known as orbital angular momentum?

Magnetic quantum number
Principal quantum number
Azimuthal quantum number
Electron spin quantum number

Question 509 of 536

Q.11 Which of these principles state that in the ground state of the atoms, the orbitals are filled in order of their increasing energies?

Afbau principle
Hund’s rule of multiplicity
Pauli’s exclusion principle
None of the above

Question 510 of 536

Q.12 What is the multiplication factor when the nuclear reactor is said to be critical?

0
1
2
10

Question 511 of 536

Q.13 Which of the following types a PEM cell belongs to?

Electrolytic cell
Fuel cell
Dry cell
Galvanic cell

Question 512 of 536

Q.14 Which of the following is not a compound of carbon?

Cinnabar
Acetic acid
Chloroform
Methane

Question 513 of 536

Q.15 What is the octane number of iso-octane?

0
1
100
200

Question 514 of 536

Q.16 Which of the following polymer is obtained by the condensation reaction between ethylene glycol and terephthalic acid?

Terelene
PMMC
PVC
None of the above

Question 515 of 536

Q.17 Which of these is not a Linear polymer?

Starch
Polyethelene
Nylons
Polysters

Question 516 of 536

Q.18 Which of the following metals is involved in the anodisation process?

Aluminium
Copper
Calcium
Bismuth

Question 517 of 536

Q.19 Which of these non-metals is commonly used as a general anesthetic?

Helium
Fluorine
Xenon
Tellurium

Question 518 of 536

Q.20 Which of the following is produced when wood is burnt in a limited supply of oxygen?

Charcoal
Water gas
Paraffin
Petroleum

Question 519 of 536

Q.1 The process occurring in the presence of oxygen is called… ..

Anaerobic
Aerobic
Glycogenic
Microaerophilic

Question 520 of 536

Q.2 The process occuring in the absence of oxygen is called… .

Anaerobic
Aerobic
Glycogenic
Microaerophilic

Question 521 of 536

Q.3 Enzymatic hydrolysis of major nutrients in GIT to yield their simpler components is .....

Fermentation
Deglutition
Glycolysis
Digestion

Question 522 of 536

Q.4 Amino acids with carbon chains that can be metabolically converted into glucose or glycogen are called… .

Metagenic amino acids
Glucogenic amino acids
Ketogenic amino acids
Glutamic amino acids

Question 523 of 536

Q.5 Amino acids with carbon chains that can be metabolically converted into ketone bodies are called… .

Metagenic amino acids
Glucogenic amino acids
Ketogenic amino acids
Glutamic amino acids

Question 524 of 536

Q.6 The water soluble fuels which are overproduced during fasting or in untreated diabetes mellitus are called… . .

Melanin bodies
Ketone bodies
Glucose bodies
Citrate bodies

Question 525 of 536

Q.7 Energy yielding anaerobic breakdown of glucose yielding lactate, ethanol with some other products is… . ..

Protein fermentation
Fat metabolism
Glucose fermentation
Nucleic acid fermentation

Question 526 of 536

Q.8 The biosynthesis of carbohydrates from simpler, non carbohydrate precursors is… . .

Gluconeogenesis
Glycogenolysis
Thermogenesis
Glycogenesis

Question 527 of 536

Q.9 An oxidative pathway of glucose-6-phosphate is also known as…

Phosphogluconate pathway
Pentose phosphate pathway
Hexose monophosphate pathway
All of them

Question 528 of 536

Q.10 The process of breakdown of glycogen to blood glucose is … . .

Gluconeogenesis
Glycogenesis
Thermogenesis
Glycogenolysis

Question 529 of 536

Q.1 Which of the following molecule is most abundant in living system?

Water
Cellulose
Protien
Starch

Question 530 of 536

Q.2 Which is the first National park established in India:

Jim Corbet National Park
Kanha National Park
Periyar National Park
Kanziranga National Park

Question 531 of 536

Q.1 Which Is Known As The Power House Of The Cell?

Mitochondria
Ribosome
Nucleus
Golgi apparatus

Question 532 of 536

Q.1 Which Is Known As The Power House Of The Cell?

Mitochondria
Ribosome
Nucleus
Golgi apparatus

Question 533 of 536

Q.1 Which Of The Following Vitamins Is Soluble In Water?

A
D
E
C

Question 534 of 536

Q.2 The Amino Acid Containing More COOH Groups Than NH2 Are Called

Basic amino acids
Neutral amino acids
Acidic amino acids
Amphoteric amino acids

Question 535 of 536

Q.1 The Fat Soluble Vitamins Are

A,B,D and E
A,C,D and E
A,D,E and K
A,C,D and K

Question 536 of 536

Q.2 Defficiency Of Which Of The Following Vitamins Causes Bleeding Of Gums And Wounds Takes Longer Time

Vitamin B1
Vitamin A
Vitamin C
Vitamin K

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