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Typical plant growth shows _________ curve.
General Science Biology Botany Class 11th NEET UG NEET UG Preparation
Q. 17 of Quiz-1441 (Que-ID : 3035)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Ans → (b)S-shaped
Explanation → Typical plant growth represents sigmoid curve.
This question is taken from this post → Plant Growth and Development (Class-11th Biology) Revision Test | MCQs For NEET - attemp/practice
More MCQs in - Plant Growth and Development (Class-11th Biology) Revision Test | MCQs For NEET
Q. 1 of Quiz-1441 (Que-ID : 3019)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 2 of Quiz-1441 (Que-ID : 3020)
Intercalary meristems are of
- Permanent nature
- Temporary nature
- Some are permanent some temporary
- None of these
Q. 3 of Quiz-1441 (Que-ID : 3021)
Cells of fibers and tracheids elongate during
- Phase of cell division
- Phase of cell elongation
- Phase of cell maturation
- Phase of cell differentiation
Q. 4 of Quiz-1441 (Que-ID : 3022)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 5 of Quiz-1441 (Que-ID : 3023)
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
Q. 6 of Quiz-1441 (Que-ID : 3024)
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
Q. 7 of Quiz-1441 (Que-ID : 3025)
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
Q. 8 of Quiz-1441 (Que-ID : 3026)
The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
Q. 9 of Quiz-1441 (Que-ID : 3027)
Which one of the followings is a gaseous plant hormone?
- Ethylene
- Gibberellin
- IAA
- Abscisic acid
Q. 10 of Quiz-1441 (Que-ID : 3028)
To prevent over – ripening, bananas should be
- given a dip in ascorbic acid
- maintained at room temperature
- refrigerated
- stored at the top of refrigerator
Q. 11 of Quiz-1441 (Que-ID : 3029)
Growth in dorsiventral leaf is measured in terms of
- length of leaf
- increase in cell number
- surface area increase
- none of these
Q. 12 of Quiz-1441 (Que-ID : 3030)
Plants grow throughout their life due to
- presence of meristems
- presence of vascular cambium
- presence of xylem and phloem
- presence of tracheids
Q. 13 of Quiz-1441 (Que-ID : 3031)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 14 of Quiz-1441 (Que-ID : 3032)
The ability to regain or recover the lost or injured part of body is
- Aging
- Regeneration
- Abnormal development
- Primary inductio
Q. 15 of Quiz-1441 (Que-ID : 3033)
Which growth hormone accerlates the malting process in brewing industry?
- Auxins
- Gibberellins
- Ethylene
- Cytokinins
Q. 16 of Quiz-1441 (Que-ID : 3034)
Which plant growth regulator is the derivative of carotenoids?
- Auxin
- Gibberelic acid
- Cytokinin
- Abscisic acid
Q. 17 of Quiz-1441 (Que-ID : 3035)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 18 of Quiz-1441 (Que-ID : 3036)
Mobilisation of stored food in germinating seeds is triggered by
- auxins
- cytokinins
- gibberellins
- ethylene
Q. 19 of Quiz-1441 (Que-ID : 3037)
Cavity formed between somatic and splanchnic mesoderm is called
- Gastrocoele
- Blastocoele
- Coelom
- Neurocoele
Q. 20 of Quiz-1441 (Que-ID : 3038)
IAA is naturally occurring plant hormone called
- Gibberlin
- Auxin
- Cytokinin
- Absicic acid
Q. 21 of Quiz-1441 (Que-ID : 3039)
Auxin is synthesised from in apical meristem from amino acid
- Isoleucine
- Methionine
- Niacin
- Tryptophan
Q. 22 of Quiz-1441 (Que-ID : 3040)
Growth regulator which induces parthenocarpy
- IAA
- ABA
- Cytokinin
- Ethylene
Q. 23 of Quiz-1441 (Que-ID : 3041)
Formation of seedless fruit without act of fertilisation
- Parthenocarpy
- pseudocarpy
- Apomixis
- Parthenogenesis
Q. 24 of Quiz-1441 (Que-ID : 3042)
The major site for production of gibberellin is
- Embryos
- Roots
- Young leaves
- All of these
More MCQs In - General Science Biology Botany Class 11th NEET UG NEET UG Preparation
Q. 24 of Quiz- (Que-ID : 3492)
Best type of pyramid which is always true is:
- Pyramid or energy
- Pyramid of Biomass
- Pyramid of number
- Both (a) and (c)
Q. 1 of Quiz- (Que-ID : 3519)
Which chemical substance affects the Ozone Layer?
- Chlorofluorocarbon
- Chlorine
- Hexafluorocarbon
- Molecular Carbon
Q. 3 of Quiz- (Que-ID : 3346)
Germplasm collection is the collection of
- germ cells
- semens
- plants/seeds with all the diverse alleles for all genes
- egg cells
Q. 4 of Quiz- (Que-ID : 2822)
Meiosis does not occur in
- asexually reproducing diploid individuals
- sexually reproducing haploid individuals
- sexually reproducing diploid individuals
- all of these.
Q. 8 of Quiz- (Que-ID : 3026)
The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
Q. 7 of Quiz- (Que-ID : 3525)
Chlorofluoro carbon are responsible for
- Acid rain
- Ozone layer depletion
- Global warming
- Thermal inversion
Q. 25 of Quiz- (Que-ID : 3018)
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
Q. 18 of Quiz- (Que-ID : 3236)
Blue dye is obtained from the leaves of
- Indigofera tinctoria
- Opium
- Aloe
- Delbergia sissoo
Q. 25 of Quiz- (Que-ID : 2943)
Genes located very close to one another on same chromosome tend to be transmitted together and are called as
- allelomorphs
- identical genes
- linked genes
- recessive genes
Q. 3 of Quiz- (Que-ID : 3121)
Which of the following is the unit of ψ?
- Pascal
- Joule
- Newton
- Electron volt
Q. 8 of Quiz- (Que-ID : 2851)
The outermost and innermost wall layers of microsporangium in an anther are respectively
- endothecium and tapetum
- epidermis and endodermis
- epidermis and middle layer
- epidermis and tapetum.
Q. 17 of Quiz- (Que-ID : 3260)
______ are devoid of respiratory, excretory and circulatory organs.
- Threadworms
- Sponges
- Tapeworms
- Liver fluke
Q. 8 of Quiz- (Que-ID : 3101)
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
Q. 18 of Quiz- (Que-ID : 2811)
The thin and convoluted outer layer of gray matter that covers the cerebral hemispheres is
- Medulla oblongata
- Thalamus
- Cerebral cortex
- Meninges
Q. 17 of Quiz- (Que-ID : 2660)
How many percent of co2 is carried by plasma in dissolved form
- 6
- 7
- 20-25
- None of the above
Q. 7 of Quiz- (Que-ID : 3500)
Biodiversity Act of India was passed by the Parliament in the year
- 1996
- 1992
- 2002
- 2000
Q. 16 of Quiz- (Que-ID : 2759)
Which hormone inhibits release of growth hormone
- Insulin
- Gonadotrophin
- Somatostatin
- Thymosin
Q. 13 of Quiz- (Que-ID : 3406)
DNA element with ability to change its position is called
- Cistron
- Transposon
- Intron
- Ricon
Q. 7 of Quiz- (Que-ID : 2725)
In which form fungi store food material
- Lipid
- Starch
- Oil and glycogen
- Protein
Q. 1 of Quiz- (Que-ID : 2794)
Which one of the followings is the function of parasympathetic nervous system?
- Stimulates oil and sweat glands in the skin
- Pupil constriction
- Acceleration of heart beat
- Contraction of hair muscles
Q. 13 of Quiz- (Que-ID : 3281)
The gametophyte is not an independent, free-living generation in
- Pinus
- Polytrichum
- Adiantum
- Marchantia
Q. 6 of Quiz- (Que-ID : 3274)
Transgenic plants are the ones
- Grown in artificial medium after hybridization in the field
- Produced by a somatic embryo in artificial medium
- Generated by introducing foreign DNA in to a cell and regenerating a plant from that cell
- Produced after protoplast fusion in artificial medium
Q. 7 of Quiz- (Que-ID : 3150)
Hydrolysis of starch occurs with the help of
- Peptidase
- Amylase
- Sucrose
- Lipase
Q. 8 of Quiz- (Que-ID : 2726)
Common feature of archaebacteria
- Structure of cell membrane
- Structure of cell wall
- Has fatty acid synthetase
- Structure of flagellin protein
Q. 20 of Quiz- (Que-ID : 3163)
Nitrogenous bases present in DNA
- Adenine, guanine, cytosine, uracil
- Adenine, guanine, cytosine, thymine
- Adenine, thymine, uracil
- Guanine, uracil
Q. 24 of Quiz- (Que-ID : 2867)
The female gametophyte of a typical dicot at the time of fertilisation is
- 8 – celled
- 7 – celled
- 6 – celled
- 5 – celled
Q. 16 of Quiz- (Que-ID : 3109)
Toxicity of which element leads to the appearance of brown spots on leaves
- Mg
- Mn
- Fe
- Cu
Q. 19 of Quiz- (Que-ID : 3462)
Science linking heredity with environment is:
- Ecology
- Ecophysiology
- Genecology
- Genetics
Q. 15 of Quiz- (Que-ID : 87)
Who discovered insulin?
- F.Banting
- Edward Jenner
- Ronald Ross
- S.A wakesman
Q. 4 of Quiz- (Que-ID : 3122)
Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
- No movement of water
- Movement of water from cell B to A
- Movement of water from cell A to B
- Equilibrium between the two
Q. 13 of Quiz- (Que-ID : 2781)
The study of fish is called
- Ophiology
- Herpetology
- ichthyology
- pisiculture
Q. 16 of Quiz- (Que-ID : 3284)
Antheridia and Archegonia are sex organs of
- Moss
- Mucor
- Spirogyra
- Puccinia
Q. 8 of Quiz- (Que-ID : 3351)
Continued inbreeding, especially close inbreeding generally results in
- inbreeding depression
- inbreeding stimulation
- inbreeding hybridisation
- inbreeding mutation
Q. 23 of Quiz- (Que-ID : 2841)
Strobilanthus kunthiana differs from bamboo in
- being monocarpic
- length of juvenile phase
- being polycarpic
- none of these.
Q. 11 of Quiz- (Que-ID : 2979)
What are the structural and functional unit of kidney
- Nephrons
- Cell
- Neurons
- None of the above
Q. 5 of Quiz- (Que-ID : 2998)
Karyokinesis is the term used for
- division of cytoplasm
- division of nucleoplasm
- division of nucleus
- separation of daughter chromosomes
Q. 24 of Quiz- (Que-ID : 2637)
In which condition the food is not digested properly leading to feeling of fullness
- Indigestion
- Constipation
- Diarrhoea
- None of the above
Q. 14 of Quiz- (Que-ID : 2907)
Bartholin’s glands are situated
- on the either side of vagina in humans
- on either side of vas deferens in humans
- on either side of penis in humans
- on either side of Fallopian tube in humans
Q. 2 of Quiz- (Que-ID : 2615)
A cartilagenous flap which prevents entry of food
- Glottis
- Pyloric spincter
- Epiglottis
- Cardiac spincter
Q. 24 of Quiz- (Que-ID : 3542)
The petrol used in engines filled with catalytic converter should be
- Simple petrol
- Any type of petrol
- Unleaded petrol
- None of the above
Q. 3 of Quiz- (Que-ID : 3221)
Exceptional roots of Cuscuta are
- haustorial
- coralloid
- mucorhizal
- all of the above
Q. 2 of Quiz- (Que-ID : 3370)
Which of the following is not used as a biopesticide ?
- Trichoderma harzianum
- Nucleopolyhedrovirus
- Xanthomonas campestris
- Bacillus thuringiensis
Q. 13 of Quiz- (Que-ID : 3031)
Mechanism of development was explained by
- Hans Dietrisch
- Spemann
- Both a and b
- Haemmerling
Q. 6 of Quiz- (Que-ID : 3499)
Reserve biosphere of Sundarban is situated in which of the following states
- Bihar
- Uttar Pradesh
- Assam
- West Bengal
Q. 12 of Quiz- (Que-ID : 2755)
PTH is called hypercalcemic hormone because it leads to
- Absorption of CaCo3 from digested food
- Reabsorption of water from renal tubules
- Increasing blood calcium levels
- Maintain ion balance in blood
Q. 11 of Quiz- (Que-ID : 3379)
Enzyme which has the fibrinolytic effect is
- protease
- amylase
- lipase
- streptokinase
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