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The nitrogen exists as two nitrogen atoms joined by
General Science Biology Botany Class 11th NEET UG NEET UG Preparation
Q. 21 of Quiz-1444 (Que-ID : 3114)
The nitrogen exists as two nitrogen atoms joined by
- Di covalent bonds
- tetra covalent bonds
- triple covalent bonds
- monocovalent bond
Ans → (c)triple covalent bonds
Explanation → triple covalent bonds
This question is taken from this post → Mineral nutrition (Class 11th Biology) Revision Test | MCQs for NEET - attemp/practice
More MCQs in - Mineral nutrition (Class 11th Biology) Revision Test | MCQs for NEET
Q. 1 of Quiz-1444 (Que-ID : 3094)
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
Q. 2 of Quiz-1444 (Que-ID : 3095)
Function of zinc is
- Closing of stomata
- Biosynthesis of 3-IAA
- Synthesis of chlorophyll
- Oxidation of carbohydrate
Q. 3 of Quiz-1444 (Que-ID : 3096)
Which of the following is a group of micronutrients?
- Ca, Zn, B
- Fe, Mn, Cu
- Cl, C, Ca
- Ni, Mo, H
Q. 4 of Quiz-1444 (Que-ID : 3097)
The process of conversion of NO2– to N2 is called
- nitrification
- ammonification
- denitrification
- nitrogen fixation
Q. 5 of Quiz-1444 (Que-ID : 3098)
The formation of first stable product of nitrogen fixation is catalysed by enzyme
- dehydrogenase
- nitrogenase
- isomerase
- none of these
Q. 6 of Quiz-1444 (Que-ID : 3099)
Manganese toxicity leads to deficiency of
- iron
- calcium
- magnesium
- all of the above
Q. 7 of Quiz-1444 (Que-ID : 3100)
Chlorosis will occur if a plant is grown in
- dark
- shade
- strong light
- Fe – free medium
Q. 8 of Quiz-1444 (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. 9 of Quiz-1444 (Que-ID : 3102)
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
Q. 10 of Quiz-1444 (Que-ID : 3103)
Which one of the following mineral elements plays an in biological nitrogen fixation?
- Copper
- Manganese
- Zinc
- Molybdenum
Q. 11 of Quiz-1444 (Que-ID : 3104)
Oxygen scavangers present in root nodules of legumes is
- haemoglobin
- leg haemoglobin
- cyano haemoglobin
- none of these
Q. 12 of Quiz-1444 (Que-ID : 3105)
Which one of the following is not a micronutrient?
- Magnesium
- Molybdenum
- Boron
- Zinc
Q. 13 of Quiz-1444 (Que-ID : 3106)
Which of the following is not a macronutrient
- iron
- calcium
- manganese
- phosphorus
Q. 14 of Quiz-1444 (Que-ID : 3107)
Insectivorous plants grow where
- There is carbohydrate deficient soil
- There is nitrogen deficient soil
- Vitamin c is required
- Hormones are required
Q. 15 of Quiz-1444 (Que-ID : 3108)
Phytotron is meant for
- Controlled humidity
- Induction of mutations
- Controlled irradiation
- Growing plants under controlled environment
Q. 16 of Quiz-1444 (Que-ID : 3109)
Toxicity of which element leads to the appearance of brown spots on leaves
- Mg
- Mn
- Fe
- Cu
Q. 17 of Quiz-1444 (Que-ID : 3110)
Presence of phosphorus
- brings about healthy root growth
- promotes fruit ripening
- retards protein formation
- none
Q. 18 of Quiz-1444 (Que-ID : 3111)
Which element is required for opening and closing of stomata?
- P
- K
- Ca
- Na
Q. 20 of Quiz-1444 (Que-ID : 3113)
NPK denotes
- Nitrogen, Protein, Kinetin
- Nitrogen, Protein, Potassium
- Nitrogen, Potassium, kinetin
- Nitrogen, Phosphorus, Potassium
Q. 21 of Quiz-1444 (Que-ID : 3114)
The nitrogen exists as two nitrogen atoms joined by
- Di covalent bonds
- tetra covalent bonds
- triple covalent bonds
- monocovalent bond
Q. 22 of Quiz-1444 (Que-ID : 3115)
Biological nitrogen fixation was discovered by
- Gericke
- Nehar and Sakmann
- Liebig
- Winograndsky
Q. 23 of Quiz-1444 (Que-ID : 3116)
The enzyme involved in biological nitrogen fixation are
- Carboxylase
- Oxygenase
- Dehydrogenase
- Nitrogenase
Q. 24 of Quiz-1444 (Que-ID : 3117)
The requirement of micro nutrient are always low if the concentration increases it leads to
- deficiency symptoms
- Cell differentiation
- toxicity
- Cell elongation
Q. 25 of Quiz-1444 (Que-ID : 3118)
Analysis of xylem sap shows
- presence of enzymes
- presence of organic matter
- presence of nutrients
- presence of mineral salts
More MCQs In - General Science Biology Botany Class 11th NEET UG NEET UG Preparation
Q. 5 of Quiz- (Que-ID : 3148)
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
Q. 12 of Quiz- (Que-ID : 3155)
A protein having both structural and enzymatic traits is
- Collagen
- Trypsin
- Myosin
- Actin
Q. 11 of Quiz- (Que-ID : 582)
The capacity of communication channel is measured in
- Band rate
- Band width
- Data flow
- Bit capacity
Q. 10 of Quiz- (Que-ID : 2978)
Each kidney has how many nephrons
- 1 million
- 2 million
- 2 thousand
- 2 hundred
Q. 9 of Quiz- (Que-ID : 3002)
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
Q. 19 of Quiz- (Que-ID : 3412)
Plasmid is a
- Fungus
- Plasmid
- Part of Plasma membrane
- Extra chromosomal DNA in bacterial cell
Q. 14 of Quiz- (Que-ID : 3157)
With reference to enzymes, which one of the following statements is true?
- Apoenzyme = Holoenzyme + Coenzyme
- Coenzyme = Apoenzyme + Holoenzyme
- Holoenzyme = Apoenzyme + Coenzyme
- Holoenzyme = Coenzyme – Apoenzyme
Q. 18 of Quiz- (Que-ID : 3211)
Vessels differ from tracheids
- in being living
- in being derived from a single cell
- in that they consist of vertical row of cells with cross walls dissolved
- in coducting water and minerals
Q. 10 of Quiz- (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. 19 of Quiz- (Que-ID : 3162)
Enzymes, vitamins and hormones are common in
- Enhancing oxidative metabolism
- Being synthesised in the body of organisms
- Being proteinaceous
- Regulating metabolism
Q. 12 of Quiz- (Que-ID : 3130)
Water is lost in a liquid state in some plants through hydathodes. These hydathodes
- do not show any specificity in opening and closing
- remain closed during day
- remain closed at night
- remain always open
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. 8 of Quiz- (Que-ID : 2951)
In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called
- A – DNA
- B – DNA
- cDNA
- rDNA
Q. 18 of Quiz- (Que-ID : 2861)
Plants with ovaries having only one or a few ovules are generally pollinated by
- bees
- Butterflies
- birds
- Wind
Q. 10 of Quiz- (Que-ID : 3553)
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
Q. 19 of Quiz- (Que-ID : 3012)
The stage in which daughter chromosomes move toward the poles of the spindle is
- Anaphase
- Metaphase
- Prophase
- Telophase
Q. 20 of Quiz- (Que-ID : 2989)
ANF can cause
- Vasoconstriction
- Vasodilation
- Both a and b
- None of the above
Q. 21 of Quiz- (Que-ID : 2664)
which among the following is caused due to decreased respiratory surface area
- Astma
- Emphysema
- Sclerosis
- None of the above
Q. 1 of Quiz- (Que-ID : 2719)
In five kingdom classification chlamydomonas and chlorella falls under
- Algae
- Plantae
- Monera
- Protista
Q. 15 of Quiz- (Que-ID : 3408)
Triticale, first man made cereal crop, has been obtained by crossing wheat with:
- Rye
- Pearl millet
- Sugarcane
- Barley
Q. 4 of Quiz- (Que-ID : 3022)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 22 of Quiz- (Que-ID : 3115)
Biological nitrogen fixation was discovered by
- Gericke
- Nehar and Sakmann
- Liebig
- Winograndsky
Q. 20 of Quiz- (Que-ID : 3038)
IAA is naturally occurring plant hormone called
- Gibberlin
- Auxin
- Cytokinin
- Absicic acid
Q. 5 of Quiz- (Que-ID : 3498)
Which type of living organisms given below are listed in Red Data Book”?
- Rare species
- Rare and endangered species
- Endangered species
- None of these
Q. 21 of Quiz- (Que-ID : 2789)
Biosystematics aims at
- identification and arrangement of organisms on the basis of cytological characteristics
- The classification of organisms based on broad morphological characters
- Delimiting various taxa of organism and establishing their relationships
- The classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
Q. 20 of Quiz- (Que-ID : 2838)
Select the monocarpic plant out of the following.
- Bamboo
- Litchi
- Mango
- all of these.
Q. 15 of Quiz- (Que-ID : 3233)
The axillary buds arise
- endogenously from the pericycle
- exogenously from the tissues of the shoot apex
- endogenously from the cambium tissues
- exogenously from the innermost layers of cortex
Q. 16 of Quiz- (Que-ID : 2884)
Which of the following pairs contributes to an increase in population ?
- Natality and immigration
- Mortality and emigration
- Natality and emigration
- Mortality and immigration
Q. 19 of Quiz- (Que-ID : 3187)
Which of the following helps in locomotion of earthworms?
- Clitellum
- Setae
- Intersegmental grooves
- Nephridiophores
Q. 2 of Quiz- (Que-ID : 3445)
The size of the population tells us a lot about its status in the
- Environment
- Sex-ratio
- Age pyramid
- Habitat
Q. 21 of Quiz- (Que-ID : 3264)
One of the following are not formed in mosquito
- Sporozoites
- Ookinetes
- Oocystes
- Merozoites
Q. 5 of Quiz- (Que-ID : 3173)
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
Q. 20 of Quiz- (Que-ID : 3138)
Assertion (A): K+ ion accumulation found in Nitella depends on its respiratory activity. Reason (R)Absorption of all ions in plants completely depends on the usage of metabolic energy. The correct answer is
- A and R are true and R is the correct explanation of A
- A and R are true but R is not the correct explanation of A
- A is true but R is false
- A is false but R is true
Q. 9 of Quiz- (Que-ID : 3052)
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
Q. 3 of Quiz- (Que-ID : 2946)
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
Q. 22 of Quiz- (Que-ID : 2740)
Genetic recombination in prokaryotes can occur during
- Transformation
- Transduction
- Conjunction
- All of the above
Q. 17 of Quiz- (Que-ID : 2835)
Which of the following is a post-fertilisation event in flowering plants?
- Transfer of pollen grains
- Embryo development
- Formation of flower
- Formation of pollen grains
Q. 4 of Quiz- (Que-ID : 3047)
Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol
- Pyruvic acid decarboxylase
- Alcohol dehydrogenase
- None of these
- Both of these
Q. 13 of Quiz- (Que-ID : 2681)
Which among the following plays imp role in clotting
- mg2+
- Ca2+
- Na+
- Mn2+
Q. 5 of Quiz- (Que-ID : 3098)
The formation of first stable product of nitrogen fixation is catalysed by enzyme
- dehydrogenase
- nitrogenase
- isomerase
- none of these
Q. 20 of Quiz- (Que-ID : 2888)
Which of the following is not a characteristic of an ideal contraceptive ?
- User-friendly
- Irreversible
- Easily available
- Least side-effects
Q. 17 of Quiz- (Que-ID : 3260)
______ are devoid of respiratory, excretory and circulatory organs.
- Threadworms
- Sponges
- Tapeworms
- Liver fluke
Q. 16 of Quiz- (Que-ID : 3234)
The arrangement of sepals or petals in floral bud is called
- Placentation
- Aestivation
- Bracteate
- Phyllotaxy
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