Biotechnology MCQ for NEET. We covered all the Biotechnology MCQ for NEET in this post for free so that you can practice well for the exam.
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MCQ on Biotechnology for NEET Students
The function of leghaemoglobin in the root nodules of legumes is
(A) inhibition of nitrogenase activity
(B) oxygen removal
(C) nodules differentiation
(D) expression of nif gene
Option b – oxygen removal
Photosynthesis is a physicochemical process that involves chemical reactions catalyzed by various enzymes. Where are the enzymes necessary for incorporating CO2 present in chloroplast?
(A) Grana
(B) Stroma
(C) Stomata
(D) Chloroplast membrane
Option b – Stroma
The overall goal of glycolysis, Krebs’ cycle, and the electron transport system is the formation of
(A) ATP in one large oxidation reaction
(B) Sugars
(C) Nucleic acids
(D) ATP in small stepwise units
Option d – ATP in small stepwise units
In a taxonomic hierarchy, the number of characters will increase as we go from
(A) Class to Order
(B) Species to Kingdom
(C) Genus to Species
(D) Kingdom to Species
Option d – Kingdom to Species
How many different types of genetically different gametes will be produced by a heterozygous plant having the genotype AABbCc?
(A) Six
(B) Nine
(C) Two
(D) Four
Option d – Four
If the haploid number in a flowering plant is 14. What shall be the number of chromosomes in integuments, antipodal cells? embryo, endosperm, and nucellus respectively?
(A) 14, 28, 7, 42, 21
(B) 7, 14, 42, 28, 14
(C) 28, 14, 28, 42, 28
(D) 28, 42, 14, 28, 14
Option c – 28, 14, 28, 42, 28
While analyzing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were: Adenine = 29%, Guanine = 17%, Cytosine = 32%, Thymine = 17%. Considering Chargaff’s rule it can be concluded that
(A) It is a double-stranded circular DNA.
(B) It is single-stranded DNA.
(C) It is a double-stranded linear DNA.
(D) No conclusion can be drawn.
Option b – It is single-stranded DNA.
A protoplast is a cell
(A) undergoing division
(B) without cell wall
(C) without plasma membrane
(D) without nucleus
Option b – without cell wall
Identify the INCORRECT statement from the following.
(A) The reservoir pool is for the phosphorus cycle earth’s crust whereas the atmosphere is the reservoir pool for the carbon cycle.
(B) During the carbon cycle and phosphorus cycle, there is very little respiratory release of carbon and phosphorus respectively.
(C) Atmosphere inputs of phosphorus throughout rainfall are much smaller than carbon inputs.
(D) Gaseous exchanges of phosphorus between organisms and the environment are negligible.
Option b – During the carbon cycle and phosphorus cycle, there is very little respiratory release of carbon and phosphorus respectively.
Which of the following is the CORRECT reason for mammals being largely successful?
(A) Mammals maintain a constant temperature and thrive in extreme habitats.
(B) They have the ability to increase body heat during summer and decrease body heat during winter.
(C) Mammals profusely sweat to maintain a constant external environment.
(D) Their body pH is constant in extreme conditions.
Option a – Mammals maintain a constant temperature and thrive in extreme habitats.
Which one of the following processes during decomposition is correctly described?
(A) Fragmentation – Carried out by organisms such as earthworms
(B) Humification – Leads to the accumulation of a dark-colored substance humus which undergoes microbial action at a very fast rate
(C) Catabolism – The last step in the decomposition under fully anaerobic conditions
(D) Leaching – Water soluble inorganic nutrients rise to the top layers of soil
Option a – Fragmentation – Carried out by organisms such as earthworms
Which of the following is NOT a characteristic function of the veins of the leaf?
(A) Provide rigidity to the leaf blade.
(B) Act as channels for the transport of food. water and minerals.
(C) Provide a structural framework for the lamina.
(D) Store the food prepared by leaf.
Option d – Store the food prepared by leaf.
Which one of the following statements is CORRECT?
(A) Legumes are incapable of fixing nitrogen.
(B) Legumes fix nitrogen only through specialized bacteria living in their nodulated roots.
(C) Legumes fix nitrogen independent of the bacteria that live in their roots.
(D) Legumes fix nitrogen only through bacteria forming nodules on any part of the plant.
Option b – Legumes fix nitrogen only through specialized bacteria living in their nodulated roots.
Phosphodiester linkage is formed between
(A) C-5 of one nucleotide and C-3 of the next
(B) C-1 of one nucleotide and C-2 of the next
(C) purines of opposite strands
(D) pyrimidines of opposite strands
Option a – C-5 of one nucleotide and C-3 of the next
Experimental material in the study of DNA replication has been
(A) Escherichia coli
(B) Neurospora crassa
(C) Pneumococcus
(D) Drosophila melanogaster
Option a – Escherichia coli
What is it that forms the basis of DNA fingerprinting?
(A) The relative proportions of purines and pyrimidines in DNA
(B) The relative difference in the DNA occurrence in blood, skin, and saliva.
(C) The relative amount of DNA in the ridges and grooves of the fingerprints.
(D) Satellite DNA occurs as highly repeated short DNA segments.
Option d – Satellite DNA occurs as highly repeated short DNA segments.
BOD refers to
(A) The oxygen required for bacteria to grow in 1 liter of effluent.
(B) The amount of oxygen consumed if all the organic matter in 1000 ml of water were oxidized by bacteria.
(C) The amount of oxygen released if all the organic matter in 1000 ml of water were oxidized by bacteria.
(D) The amount of oxygen released when all the organic matter was consumed by bacteria in 1 liter of water.
Option b – The amount of oxygen consumed if all the organic matter in 1000 ml of water were oxidized by bacteria.
An example of endomycorrhiza is
(A) Nostoc
(B) Glomus
(C) Agaricus
(D) Rhizobium
Option b – Glomus
If the + sign is assigned to beneficial interaction, the’ -‘ sign to detrimental, and the’ o’ sign to neutral interaction, then the population interaction represented by ‘+’ ‘-‘ refers to
(A) parasitism
(B) mutualism
(C) amensalism
(D) commensalism
Option a – parasitism
We covered all the biotechnology MCQ for neet above in this post for free so that you can practice well for the exam.
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