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NEET 2022 — Zoology

All 50 Zoology questions we hold from this paper, of the 199 on the site for this sitting — every option and the answer key. 4 marks each, −1 for a wrong answer.

Zoology

45 questions, one correct option each. +4 for a correct answer, −1 for a wrong one, nothing for a blank.

Q1openThe Living World · Taxonomy, nomenclature and taxonomic categories

In the taxonomic categories, which hierarchical arrangement in ascending order is correct in the case of animals?

  1. A.Kingdom, Order, Phylum, Class, Family, Genus, Species
  2. B.Kingdom, Phylum, Class, Order, Family, Genus, Species✓
  3. C.Kingdom, Class, Phylum, Family, Order, Genus, Species
  4. D.Kingdom, Order, Class, Phylum, Family, Genus, Species

The worked solution is part of a paid pack.

Q2openBiotechnology and its Applications · Applications in medicine: insulin, gene therapy, molecular diagnosis

In gene therapy of adenosine deaminase (ADA) deficiency, the patient requires periodic infusion of genetically engineered lymphocytes because:

  1. A.Genetically engineered lymphocytes are not immortal cells✓
  2. B.A retroviral vector is introduced into these lymphocytes
  3. C.The gene isolated from marrow cells producing ADA is introduced into cells at embryonic stages
  4. D.Lymphocytes from the patient's blood are grown in culture, outside the body

The worked solution is part of a paid pack.

Q3openMicrobes in Human Welfare · Microbes in household and industrial products

Identify the microorganism which is responsible for the production of the immunosuppressive molecule cyclosporin A:

  1. A.Streptococcus cerevisiae
  2. B.Trichoderma polysporum✓
  3. C.Clostridium butylicum
  4. D.Aspergillus niger

The worked solution is part of a paid pack.

Q4open

Given below are two statements:

Statement I: Fatty acids and glycerols cannot be absorbed into the blood.

Statement II: Specialised lymphatic capillaries called lacteals carry chylomicrons into lymphatic vessels and ultimately into the blood.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct
  2. B.Both Statement I and Statement II are correct✓
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect

The worked solution is part of a paid pack.

Q5openAnimal Kingdom · Chordates: Pisces to Mammalia

In which of the following animals does the digestive tract have additional chambers like crop and gizzard?

  1. A.Pavo, Psittacula, Corvus✓
  2. B.Corvus, Columba, Chameleon
  3. C.Bufo, Balaenoptera, Bangarus
  4. D.Catla, Columba, Crocodilus

The worked solution is part of a paid pack.

Q6openOrganisms and Populations · Population attributes, growth models and interactions

If 8 Drosophila in a laboratory population of 80 died during a week, the death rate in the population is ______ individuals per Drosophila per week.

  1. A.Zero
  2. B.0.1✓
  3. C.10
  4. D.1.0

The worked solution is part of a paid pack.

Q7openHuman Health and Disease · Immunity, vaccination, AIDS, cancer

Given below are two statements:

Statement I: Autoimmune disorder is a condition where the body's defence mechanism recognises its own cells as foreign bodies.

Statement II: Rheumatoid arthritis is a condition where the body does not attack self cells.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct
  2. B.Both Statement I and Statement II are correct
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect✓

The worked solution is part of a paid pack.

Q8open

Which of the following functions is not performed by secretions from the salivary glands?

  1. A.Digestion of disaccharides✓
  2. B.Control of bacterial population in the mouth
  3. C.Digestion of complex carbohydrates
  4. D.Lubrication of the oral cavity

The worked solution is part of a paid pack.

Q9openExcretory Products and their Elimination · Human excretory system and nephron

Nitrogenous waste is excreted in the form of pellet or paste by:

  1. A.Pavo✓
  2. B.Ornithorhynchus
  3. C.Salamandra
  4. D.Hippocampus

The worked solution is part of a paid pack.

Q10openBiomolecules · Carbohydrates, lipids, amino acids and proteins

A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is , then what is the formula for maltose?

  1. A.
  2. B.
  3. C.
  4. D.✓

The worked solution is part of a paid pack.

Q11openBiological Classification · Monera, Protista and Fungi

Identify the asexual reproductive structure associated with Penicillium:

  1. A.Buds
  2. B.Zoospores
  3. C.Conidia✓
  4. D.Gemmules

The worked solution is part of a paid pack.

Q12openBody Fluids and Circulation · Blood, blood groups and lymph

Given below are two statements:

Statement I: The coagulum is formed of a network of threads called thrombins.

Statement II: The spleen is the graveyard of erythrocytes.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct✓
  2. B.Both Statement I and Statement II are correct
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect

The worked solution is part of a paid pack.

Q13openEcosystem · Structure, productivity and decomposition

Detritivores break down detritus into smaller particles. This process is called:

  1. A.Decomposition
  2. B.Catabolism
  3. C.Fragmentation✓
  4. D.Humification

The worked solution is part of a paid pack.

Q14openLocomotion and Movement · Disorders

Which of the following is a correct match for a disease and its symptoms?

  1. A.Muscular dystrophy – An autoimmune disorder causing progressive degeneration of skeletal muscle
  2. B.Arthritis – Inflamed joints✓
  3. C.Tetany – High level causing rapid spasms
  4. D.Myasthenia gravis – Genetic disorder resulting in weakening and paralysis of skeletal muscle

The worked solution is part of a paid pack.

Q15openBreathing and Exchange of Gases · Respiratory organs and mechanism of breathing

Which of the following is not a function of the conducting part of the respiratory system?

  1. A.Provides surface for diffusion of and ✓
  2. B.It clears inhaled air of foreign particles
  3. C.Inhaled air is humidified
  4. D.Temperature of inhaled air is brought to body temperature

The worked solution is part of a paid pack.

Q16openBreathing and Exchange of Gases · Exchange and transport of gases

Under normal physiological conditions in human beings, every 100 mL of oxygenated blood can deliver ______ mL of to the tissues.

  1. A.10 mL
  2. B.2 mL
  3. C.5 mL✓
  4. D.4 mL

The worked solution is part of a paid pack.

Q17openLocomotion and Movement · Disorders

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chance of fractures.

Reason (R): A common cause of osteoporosis is increased levels of oestrogen.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.(A) is not correct but (R) is correct
  2. B.Both (A) and (R) are correct and (R) is the correct explanation of (A)
  3. C.Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  4. D.(A) is correct but (R) is not correct✓

The worked solution is part of a paid pack.

Q18openCell: The Unit of Life · Cell membrane, cell wall and endomembrane system

Which of the following statements with respect to the endoplasmic reticulum is incorrect?

  1. A.SER are the sites for lipid synthesis
  2. B.RER has ribosomes attached to the ER
  3. C.SER is devoid of ribosomes
  4. D.In prokaryotes only RER is present✓

The worked solution is part of a paid pack.

Q19openBiotechnology: Principles and Processes · Tools of recombinant DNA technology

Given below are two statements:

Statement I: Restriction endonucleases recognise a specific sequence to cut DNA, known as a palindromic nucleotide sequence.

Statement II: Restriction endonucleases cut the DNA strand a little away from the centre of the palindromic site.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct
  2. B.Both Statement I and Statement II are correct✓
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect

The worked solution is part of a paid pack.

Q20open

Breeding crops with higher levels of vitamins and minerals, or higher proteins and healthier fats, is called:

  1. A.Bio-accumulation
  2. B.Bio-magnification
  3. C.Bio-remediation
  4. D.Bio-fortification✓

The worked solution is part of a paid pack.

Q21openMolecular Basis of Inheritance · DNA structure and replication

If the length of a DNA molecule is 1.1 metres, what will be the approximate number of base pairs?

  1. A. bp
  2. B. bp✓
  3. C. bp
  4. D. bp

The worked solution is part of a paid pack.

Q22openCell Cycle and Cell Division · Meiosis and its significance

Regarding meiosis, which of the statements is incorrect?

  1. A.Four haploid cells are formed at the end of meiosis II
  2. B.There are two stages in meiosis, meiosis I and II
  3. C.DNA replication occurs in the S phase of meiosis II✓
  4. D.Pairing of homologous chromosomes and recombination occur in meiosis I

The worked solution is part of a paid pack.

Q23openEvolution · Natural selection, Hardy–Weinberg, adaptive radiation

Natural selection where more individuals acquire a specific character value other than the mean character value leads to:

  1. A.Random change
  2. B.Stabilising change
  3. C.Directional change✓
  4. D.Disruptive change

The worked solution is part of a paid pack.

Q24openReproductive Health · Population and birth control methods

Lippes loop is a type of contraceptive used as:

  1. A.Copper-releasing IUD
  2. B.Cervical barrier
  3. C.Vault barrier
  4. D.Non-medicated IUD✓

The worked solution is part of a paid pack.

Q25openStructural Organisation in Animals · Animal tissues

Which of the following is not a connective tissue?

  1. A.Neuroglia✓
  2. B.Blood
  3. C.Adipose tissue
  4. D.Cartilage

The worked solution is part of a paid pack.

Q26open

Tegmina in cockroach arise from:

  1. A.Prothorax and mesothorax
  2. B.Prothorax
  3. C.Mesothorax✓
  4. D.Metathorax

The worked solution is part of a paid pack.

Q27openMolecular Basis of Inheritance · Gene regulation: lac operon; Human Genome Project, DNA fingerprinting

In an E. coli strain the i gene gets mutated and its product cannot bind the inducer molecule. If the growth medium is provided with lactose, what will be the outcome?

  1. A.RNA polymerase will bind the promoter region
  2. B.Only the z gene will get transcribed
  3. C.z, y, a genes will be transcribed
  4. D.z, y, a genes will not be translated✓

The worked solution is part of a paid pack.

Q28openStructural Organisation in Animals · Animal tissues

Which of the following is present between the adjacent bones of the vertebral column?

  1. A.Smooth muscle
  2. B.Intercalated discs
  3. C.Cartilage✓
  4. D.Areolar tissue

The worked solution is part of a paid pack.

Q29openHuman Reproduction · Gametogenesis and menstrual cycle

Which of the following statements are true for spermatogenesis but do not hold true for oogenesis?

(a) It results in the formation of haploid gametes

(b) Differentiation of the gamete occurs after the completion of meiosis

(c) Meiosis occurs continuously in a mitotically dividing stem cell population

(d) It is controlled by luteinising hormone (LH) and follicle stimulating hormone (FSH) secreted by the anterior pituitary

(e) It is initiated at puberty

Choose the most appropriate answer from the options given below:

  1. A.(b), (c) and (e) only✓
  2. B.(c) and (e) only
  3. C.(b) and (c) only
  4. D.(b), (d) and (e) only

The worked solution is part of a paid pack.

Q30openHuman Reproduction · Gametogenesis and menstrual cycle

At which stage of life is the oogenesis process initiated?

  1. A.Adult
  2. B.Puberty
  3. C.Embryonic development stage✓
  4. D.Birth

The worked solution is part of a paid pack.

Q31openHuman Reproduction · Gametogenesis and menstrual cycle

Given below are two statements:

Statement I: The release of sperms into the seminiferous tubules is called spermiation.

Statement II: Spermiogenesis is the process of formation of sperms from spermatogonia.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct
  2. B.Both Statement I and Statement II are correct
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect✓

The worked solution is part of a paid pack.

Q32openAnimal Kingdom · Chordates: Pisces to Mammalia

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): All vertebrates are chordates but all chordates are not vertebrates.

Reason (R): The notochord is replaced by the vertebral column in adult vertebrates.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.(A) is not correct but (R) is correct
  2. B.Both (A) and (R) are correct and (R) is the correct explanation of (A)✓
  3. C.Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  4. D.(A) is correct but (R) is not correct

The worked solution is part of a paid pack.

Q33openBiodiversity and Conservation · Loss of biodiversity and its conservation

In situ conservation refers to:

  1. A.Conserving only extinct species
  2. B.Protecting and conserving the whole ecosystem✓
  3. C.Conserving only high-risk species
  4. D.Conserving only endangered species

The worked solution is part of a paid pack.

Q34openCell Cycle and Cell Division · Mitosis

Select the incorrect statement with reference to mitosis:

  1. A.Splitting of the centromere occurs at anaphase
  2. B.All the chromosomes lie at the equator at metaphase
  3. C.Spindle fibres attach to the centromere of chromosomes✓
  4. D.Chromosomes decondense at telophase

The worked solution is part of a paid pack.

Q35openBiological Classification · Monera, Protista and Fungi

Given below are two statements:

Statement I: Mycoplasma can pass through a filter of less than 1 micron size.

Statement II: Mycoplasma are bacteria with a cell wall.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct
  2. B.Both Statement I and Statement II are correct
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect✓

The worked solution is part of a paid pack.

Q36openReproductive Health · Population and birth control methods

Match List-I with List-II with respect to methods of contraception and their respective actions.

List-IList-II
(a) Diaphragms(i) Inhibit ovulation and implantation
(b) Contraceptive pills(ii) Increase phagocytosis of sperm within the uterus
(c) Intra-uterine devices(iii) Absence of menstrual cycle and ovulation following parturition
(d) Lactational amenorrhea(iv) They cover the cervix, blocking the entry of sperms

Choose the correct answer from the options given below:

  1. A.(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  2. B.(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
  3. C.(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)✓
  4. D.(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

The worked solution is part of a paid pack.

Q37openPrinciples of Inheritance and Variation · Chromosomal theory and linkage

The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome?

  1. A.a, c, b, d✓
  2. B.a, d, b, c
  3. C.d, b, a, c
  4. D.a, b, c, d

The worked solution is part of a paid pack.

Q38openHuman Health and Disease · Immunity, vaccination, AIDS, cancer

Select the incorrect statement with respect to acquired immunity:

  1. A.Acquired immunity is a non-specific type of defence present at the time of birth✓
  2. B.Primary response is produced when our body encounters a pathogen for the first time
  3. C.Anamnestic response is elicited on subsequent encounters with the same pathogen
  4. D.Anamnestic response is due to memory of the first encounter

The worked solution is part of a paid pack.

Q39openNeural Control and Coordination · Neuron, nerve impulse and synapse

Select the incorrect statement regarding synapses:

  1. A.Impulse transmission across a chemical synapse is always faster than that across an electrical synapse✓
  2. B.The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse
  3. C.Electrical current can flow directly from one neuron into the other across the electrical synapse
  4. D.Chemical synapses use neurotransmitters

The worked solution is part of a paid pack.

Q40open

Given below are two statements:

Statement I: In a scrubber, the exhaust from the thermal plant is passed through electric wires to charge the dust particles.

Statement II: Particulate matter (PM 2.5) cannot be removed by a scrubber but can be removed by an electrostatic precipitator.

In the light of the above statements, choose the most appropriate answer from the options given below:

  1. A.Statement I is incorrect but Statement II is correct✓
  2. B.Both Statement I and Statement II are correct
  3. C.Both Statement I and Statement II are incorrect
  4. D.Statement I is correct but Statement II is incorrect

The worked solution is part of a paid pack.

Q41openBiological Classification · Monera, Protista and Fungi

Which of the following is a correct statement?

  1. A.Mycoplasma have DNA, ribosomes and a cell wall
  2. B.Cyanobacteria are a group of autotrophic organisms classified under kingdom Monera✓
  3. C.Bacteria are exclusively heterotrophic organisms
  4. D.Slime moulds are saprophytic organisms classified under kingdom Monera

The worked solution is part of a paid pack.

Q42openBiotechnology and its Applications · Applications in medicine: insulin, gene therapy, molecular diagnosis

Statements related to human insulin are given below. Which statement(s) is/are correct about genetically engineered insulin?

(a) Pro-hormone insulin contains an extra stretch of C-peptide

(b) A-peptide and B-peptide chains of insulin were produced separately in E. coli, extracted and combined by creating disulphide bonds between them

(c) Insulin used for treating diabetes was extracted from cattle and pigs

(d) Pro-hormone insulin needs to be processed for conversion into a mature and functional hormone

(e) Some patients develop allergic reactions to the foreign insulin

Choose the most appropriate answer from the options given below:

  1. A.(c), (d) and (e) only
  2. B.(a), (b) and (d) only
  3. C.(b) only✓
  4. D.(c) and (d) only

The worked solution is part of a paid pack.

Q43openEvolution · Origin of life and evidences of evolution

Which of the following statements is not true?

  1. A.Flippers of penguins and dolphins are a pair of homologous organs✓
  2. B.Analogous structures are a result of convergent evolution
  3. C.Sweet potato and potato are an example of analogy
  4. D.Homology indicates common ancestry

The worked solution is part of a paid pack.

Q44openBiomolecules · Carbohydrates, lipids, amino acids and proteins

Match List-I with List-II.

List-I (Biological molecules)List-II (Biological functions)
(a) Glycogen(i) Hormone
(b) Globulin(ii) Biocatalyst
(c) Steroids(iii) Antibody
(d) Thrombin(iv) Storage product

Choose the correct answer from the options given below:

  1. A.(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)✓
  2. B.(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)
  3. C.(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
  4. D.(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

The worked solution is part of a paid pack.

Q45openChemical Coordination and Integration · Endocrine glands and their hormones

Which of the following are not the effects of parathyroid hormone?

(a) Stimulates the process of bone resorption

(b) Decreases level in blood

(c) Reabsorption of by renal tubules

(d) Decreases the absorption of from digested food

(e) Increases metabolism of carbohydrates

Choose the most appropriate answer from the options given below:

  1. A.(b) and (c) only
  2. B.(a) and (c) only
  3. C.(b), (d) and (e) only✓
  4. D.(a) and (e) only

The worked solution is part of a paid pack.

Q46openBody Fluids and Circulation · Human heart, cardiac cycle and ECG

Which one of the following statements is correct?

  1. A.Increased ventricular pressure causes closing of the semilunar valves
  2. B.The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction
  3. C.The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
  4. D.Blood moves freely from atrium to ventricle during joint diastole✓

The worked solution is part of a paid pack.

Q47openStructural Organisation in Animals · Animal tissues

Match List-I with List-II.

List-IList-II
(a) Bronchioles(i) Dense regular connective tissue
(b) Goblet cell(ii) Loose connective tissue
(c) Tendons(iii) Glandular tissue
(d) Adipose tissue(iv) Ciliated epithelium

Choose the correct answer from the options given below:

  1. A.(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
  2. B.(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)✓
  3. C.(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
  4. D.(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

The worked solution is part of a paid pack.

Q48openPrinciples of Inheritance and Variation · Sex determination, mutation, genetic disorders

If a colour-blind female marries a man whose mother was also colour blind, what are the chances of her progeny having colour blindness?

  1. A.100%✓
  2. B.25%
  3. C.50%
  4. D.75%

The worked solution is part of a paid pack.

Q49openBiotechnology: Principles and Processes · Tools of recombinant DNA technology

Which of the following is not a desirable feature of a cloning vector?

  1. A.Presence of two or more recognition sites✓
  2. B.Presence of an origin of replication
  3. C.Presence of a marker gene
  4. D.Presence of a single restriction enzyme site

The worked solution is part of a paid pack.

Q50openMolecular Basis of Inheritance · DNA structure and replication

Ten E. coli cells with N-dsDNA are incubated in a medium containing N nucleotides. After 60 minutes, how many E. coli cells will have DNA totally free from N?

  1. A.80 cells
  2. B.20 cells
  3. C.40 cells
  4. D.60 cells✓

The worked solution is part of a paid pack.