NEET 2026 — Zoology Questions with Answers
All 165 Zoology previous-year questions from NEET 2026, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.
Practice Zoology as a timed test →- Q1.Human Endocrine System
Match List I with List II: List I A. Cortisol B. Aldosterone C. Cholecystokinin D. Progesterone List II I. Stimulates the formation of alveoli in mammary glands II. Produces anti-inflammatory reactions III. Stimulates reabsorption of \ce{Na+} and water from renal tubule IV. Stimulates secretion of pancreatic enzymes and bile juice Choose the correct answer from the options given below:
- a)(1) A-III, B-II, C-IV, D-I
- b)(2) A-IV, B-II, C-I, D-III
- c)(3) A-II, B-III, C-IV, D-I
- d)(4) A-II, B-III, C-I, D-IV
- Q2.Human Physiology
Arrange the following events occurring in Renin-Angiotensin mechanism in the correct order: A. Increase in blood pressure and Glomerular filtration rate. B. Reabsorption of \ce{Na+} and water from distal parts of tubule due to Aldosterone. C. Fall in Glomerular filtration rate. D. Vasoconstriction by Angiotensin II and release of Aldosterone. E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II. Choose the correct answer from the options given below:
- a)(1) A, C, E, B, D
- b)(2) C, A, B, D, E
- c)(3) A, D, B, E, C
- d)(4) C, E, D, B, A
- Q3.Human Respiration
In humans, respiration occurs in the following steps. Arrange these steps in the correct order. A. Diffusion of \ce{O2} and \ce{CO2} between blood and tissues B. Diffusion of \ce{O2} and \ce{CO2} across alveolar membrane C. Pulmonary ventilation by which atmospheric air is drawn in and \ce{CO2} rich alveolar air is released out D. Cellular respiration E. Transport of gases by the blood Choose the correct answer from the options given below:
- a)(1) A, B, C, D, E
- b)(2) E, A, C, D, B
- c)(3) C, B, E, A, D
- d)(4) C, A, B, E, D
- Q4.Human diseases
The following are the stages of life cycle of \textit{Plasmodium}. Arrange the stages in the proper order. A. The parasites reproduce asexually in RBCs, bursting the cells. B. The parasites reproduce asexually in liver cells, bursting the cells and releasing into blood. C. Gametocytes develop in RBCs. D. Sporozoites reach the liver through the blood. E. Female mosquito injects sporozoites into humans during bite. Choose the correct answer from the options given below:
- a)(1) E, D, B, A, C
- b)(2) A, B, C, D, E
- c)(3) C, A, B, D, E
- d)(4) E, C, D, B, A
- Q5.Biotechnology principles
Insertion of a foreign \ce{DNA} at BamHI site in an \textit{E. coli} cloning vector pBR322 results in the loss of antibiotic resistance towards
- a)(1) Ampicillin and tetracycline
- b)(2) Ampicillin
- c)(3) Tetracycline
- d)(4) Gentamycin
- Q6.Enzymes
The following reaction depicts the activity of a particular class of enzymes : \( \text{X - Y} \) \( \text{C - C} \) \( \text{(Substrate)} \) \( \text{(Product)} \) \( \text{(Product)} \) \( \text{C - C} \stackrel{\text{E}}{\rightleftharpoons} \text{X - Y + C - C} \). Identify the enzyme class 'E' from the following options:
- a)Transferases
- b)Isomerases
- c)Lyases
- d)Ligases
- Q7.Human physiology
The specific receptors for neurotransmitters in a synapse are present on ________.
- a)Schwann cell
- b)Pre-synaptic membrane
- c)Myelin sheath
- d)Post-synaptic membrane
- Q8.Genetics
What is the probability of having children with 'O' blood group, where both mother and father are heterozygous for 'A' and 'B' blood group, respectively?
- a)25%
- b)0%
- c)75%
- d)50%
- Q9.Human physiology
Match List I with List II : List I (Respiratory Volume) List II (Capacity in mL) A. ERV (Expiratory Reserve Volume) I. 2500 - 3000 mL B. RV (Residual Volume) II. 500 mL C. IRV (Inspiratory Reserve Volume) III. 1000 - 1100 mL D. TV (Tidal Volume) IV. 1100 - 1200 mL Choose the correct answer from the options given below:
- a)A-III, B-IV, C-I, D-II
- b)A-III, B-I, C-IV, D-II
- c)A-I, B-III, C-II, D-IV
- d)A-I, B-II, C-III, D-IV
- Q10.Evolution
Which of the following is \(\underline{\text{not}}\) an example of convergent evolution?
- a)Flippers of penguins and dolphins
- b)Eyes of octopuses and mammals
- c)Fore limbs of whales and bats
- d)Wings of butterflies and birds
- Q11.Animal morphology
Male frogs can be distinguished from female frogs due to the presence of : A. Bulging eyes B. Vocal sacs C. Webbed digits in feet D. Copulatory pad on first digit of fore limbs E. Olive green-coloured skin with dark irregular spots Choose the correct answer from the options given below:
- a)B and C only
- b)C and E only
- c)A and B only
- d)B and D only
- Q12.Animal Classification
A group of researchers procured some fish-like animals and upon investigation the following characters were observed : A. Endoskeleton was made of cartilage. B. Ectoparasitic; as they were found attached on fish skin with their circular sucking mouth. C. Paired fins and scales were absent, but 7 pairs of gill slits were present. Which of the following species of animals did they consider to fit best with these characters ?
- a)Scoliodon sp.
- b)Petromyzon sp.
- c)Exocoetus sp.
- d)Branchiostoma sp.
- Q13.Evolution of Life
Match List I with List II with respect to chronology of evolution of life forms: List I A. About 65 mya B. About 500 mya C. About 350 mya D. About 320 mya List II I. Jawless fish probably evolved II. The dinosaurs suddenly disappeared from the earth III. Seaweeds and few plants probably existed IV. Invertebrates were formed and became active Choose the correct answer from the options given below:
- a)A-III, B-IV, C-I, D-II
- b)A-I, B-II, C-III, D-IV
- c)A-II, B-IV, C-III, D-I
- d)A-II, B-IV, C-I, D-III
- Q14.Reproductive Health
Match List I with List II : List I A. Progestasert B. Multiload 375 C. Diaphragm D. Saheli List II I. Barrier made of rubber used by females II. Oral contraceptive III. Hormone releasing IUD IV. Copper releasing IUD Choose the correct answer from the options given below:
- a)A-III, B-IV, C-I, D-II
- b)A-IV, B-II, C-I, D-III
- c)A-IV, B-III, C-I, D-II
- d)A-III, B-IV, C-II, D-I
- Q15.Human Blood
The WBC count of a person's blood sample is \(8000/ ext{cu.mm}\). How many eosinophils and lymphocytes would be in the same blood sample approximately?
- a)\(300 - 500/ ext{cu.mm}\) and \(1200 - 1500/ ext{cu.mm}\), respectively
- b)\(160 - 240/ ext{cu.mm}\) and \(1600 - 2000/ ext{cu.mm}\), respectively
- c)\(300 - 500/ ext{cu.mm}\) and \(500 - 700/ ext{cu.mm}\), respectively
- d)\(100 - 120/ ext{cu.mm}\) and \(160 - 200/ ext{cu.mm}\), respectively
- Q16.Human Health
Match List I with List II : List I (Drug) A. Nicotine B. Morphine C. Heroin D. Cocaine List II (Effect) I. Causes sense of euphoria and increased energy II. Stimulates adrenal gland to release catecholamines into blood circulation III. Effective sedative and painkiller IV. A depressant; slows down body function Choose the correct answer from the options given below:
- a)A-III, B-II, C-IV, D-I
- b)A-II, B-III, C-I, D-IV
- c)A-II, B-III, C-IV, D-I
- d)A-III, B-IV, C-II, D-I
- Q17.Biotechnology
The human protein named \(\alpha-1\)-antitrypsin, obtained from transgenic animals, is used for the treatment of __________.
- a)Emphysema
- b)Alzheimer's disease
- c)Rheumatoid arthritis
- d)Cystic fibrosis
- Q18.Animal Classification
Select the set of fishes which belong to the class Osteichthyes :
- a)(1) Devil fish, Cuttlefish and Hagfish
- b)(2) Saw fish, Fighting fish and Dogfish
- c)(3) Starfish, Hagfish and Cuttlefish
- d)(4) Flying fish, Angel fish and Fighting fish
- Q19.Animal Kingdom
Select the \underline{Incorrect} statements from the following: A. Digestive system in Platyhelminthes is incomplete. B. Bilateral symmetry is a characteristic feature of adult Echinoderms. C. Pseudocoelom is possessed by Aschelminthes. D. Notochord is persistent throughout life in the class Chondrichthyes. E. Members of class Reptilia maintain a constant body temperature. Choose the answer from the options given below:
- a)(1) A and C only
- b)(2) B and E only
- c)(3) C and D only
- d)(4) B and D only
- Q20.Cell Biology
Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are
- a)(1) Ribosomes
- b)(2) Lysosomes
- c)(3) Centrosomes
- d)(4) Mitochondria
- Q21.Ecology
Which of the following equations depicts Verhulst-Pearl logistic population growth?
- a)(1) \(\frac{dN}{dt} = rN\left(\frac{K+N}{K}\right)\)
- b)(2) \(\frac{dN}{dt} = rN\left(\frac{K-N}{K}\right)\)
- c)(3) \(\frac{dN}{dt} = rN\left(\frac{K-N}{N}\right)\)
- d)(4) \(\frac{dN}{dt} = rN\left(\frac{K}{K-N}\right)\)
- Q22.Human Physiology
Select the \underline{incorrect} statements with reference to Rh grouping. A. Erythroblastosis foetalis is a condition observed having foetus with \(\text{Rh}^{-\text{ve}}\) blood and mother with \(\text{Rh}^{+\text{ve}}\) blood. B. Rh antigen is observed on RBCs in the majority of human beings. C. Before blood transfusion, Rh group should also be matched. D. Rh incompatibility is observed when a pregnant mother is \(\text{Rh}^{-\text{ve}}\) and the foetus is \(\text{Rh}^{+\text{ve}}\) . E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child. Choose the answer from the options given below:
- a)(1) C and D only
- b)(2) A and B only
- c)(3) A and E only
- d)(4) B and C only
- Q23.Biotechnology
Match List I with List II: List I (Bioactive molecules) A. Streptokinase B. Statins C. Lipases D. Cyclosporin A List II (Importance) I. Immunosuppressive agent II. Removal of clots from the blood vessels III. Blood cholesterol-lowering agent IV. Detergent formulations Choose the correct answer from the options given below:
- a)(1) A-II, B-III, C-I, D-IV
- b)(2) A-IV, B-III, C-II, D-I
- c)(3) A-III, B-II, C-IV, D-I
- d)(4) A-II, B-III, C-IV, D-I
- Q24.Animal Kingdom
Match List I with List II: List I List II A. Molluscs I. Pulmonary respiration only B. Reptiles II. Branchial respiration C. Adult amphibians III. Cellular respiration D. Amoeba IV. Pulmonary and Cutaneous respiration Choose the correct answer from the options given below:
- a)(1) A-II, B-I, C-IV, D-III
- b)(2) A-I, B-II, C-IV, D-III
- c)(3) A-II, B-I, C-III, D-IV
- d)(4) A-III, B-II, C-I, D-IV
- Q25.Genetics
The sixth mutant codon of beta globin gene causing polymerization of Haemoglobin and change in RBC shape is __________.
- a)(1) GUG
- b)(2) AUG
- c)(3) GAG
- d)(4) CAG
- Q26.Human Physiology
Choose the correct statements regarding muscle contraction. A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. B. The neural signal generates an action potential which causes the release of \(\ce{Ca^{++}}\) into sarcoplasm. C. Increase in \(\ce{Ca^{++}}\) inactivates the actin for breaking cross bridges. D. Actin binds to the myosin head to form a cross bridge. E. Shortening of sarcomere takes place, by pulling actin filaments towards the centre of 'A' band. Choose the correct answer from the options given below:
- a)(1) C and D only
- b)(2) A and B only
- c)(3) C and E only
- d)(4) A, B, D and E only
- Q27.Human Anatomy
Which of the following statements are correct with reference to human endoskeleton? A. Human skull is monocondylic. B. The joint between any two adjoining vertebrae is a cartilaginous joint. C. In human beings, the number of cervical vertebrae is seven. D. All ribs except the last 2 pairs are bicephalic. E. The occipital bone of skull is articulated with atlas vertebra. Choose the correct answer from the options given below:
- a)(1) B and E only
- b)(2) B, C and E only
- c)(3) C, D and E only
- d)(4) A, B and D only
- Q28.Human Reproduction
Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements from the following: A. Spermatogonia always undergo meiotic cell division. B. Primary spermatocytes divide mitotically to produce secondary spermatocytes. C. Secondary spermatocytes, through their second meiotic division, produce haploid spermatids. D. Spermatids produce spermatozoa through mitosis. E. Spermatids transform into spermatozoa by spermiogenesis. Choose the correct answer from the options given below:
- a)(1) A and E only
- b)(2) C and E only
- c)(3) A, C and E only
- d)(4) B, C and D only
- Q29.Human Physiology
The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in ______ related to the same nephron.
- a)Distal convoluted tubule and efferent renal arteriole
- b)Proximal convoluted tubule and efferent renal arteriole
- c)Proximal convoluted tubule and afferent renal arteriole
- d)Distal convoluted tubule and afferent renal arteriole
- Q30.Ecology and Evolution
Which one of the following is an appropriate example of 'sexual deceit'?
- a)Female wasp and fig
- b)Ophrys and bumblebee
- c)Sea anemone and clown fish
- d)Cuckoo and crow
- Q31.Animal Anatomy
Choose the correct statements regarding frog's anatomy: A. Hepatic portal system is the special venous connection between liver and intestine. B. There are twelve pairs of cranial nerves arising from the brain. C. The ureters and oviducts open separately into the cloaca in female frogs. D. Hind-brain consists of cerebellum, medulla oblongata and optic lobes. E. Sinus venosus joins the right atrium of heart. Choose the correct answer from the options given below:
- a)A, B and C only
- b)B and D only
- c)B and C only
- d)A, C and E only
- Q32.Human Embryology
Match List I with List II related to embryonic development at various months of pregnancy: List I A. The foetus movement starts and hair appears on the head B. The foetus develops limbs and digits C. The foetus develops external genital organs D. The foetus body is covered with fine hair; eyelids separate and eyelashes are formed List II I. 24 weeks of pregnancy II. 20 weeks of pregnancy III. 8 weeks of pregnancy IV. 12 weeks of pregnancy Choose the correct answer from the options given below:
- a)A-IV, B-II, C-III, D-I
- b)A-II, B-III, C-IV, D-I
- c)A-III, B-II, C-IV, D-I
- d)A-II, B-IV; C-III, D-I
- Q33.Genetics
In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are _______.
- a)females and males, respectively
- b)all males
- c)males and females, respectively
- d)all females
- Q34.Animal Reproduction
In which animal do haploid cells divide mitotically to produce gametes?
- a)Male honeybees
- b)Male earthworms
- c)Male frogs
- d)Male grasshoppers
- Q35.Human Reproduction
Arrange the following cell layers/structures around the female gamete, from outer to inner side: A. Zona pellucida B. Perivitelline space C. Corona radiata D. Plasma membrane of ovum Choose the correct answer from the options given below :
- a)(1) D, B, A, C
- b)(2) C, A, D, B
- c)(3) C, A, B, D
- d)(4) A, C, B, D
- Q36.Microbiology in Food
What is the reason behind production of large holes in 'Swiss Cheese'?
- a)(1) The production of large amount of \ce{CO2} by extit{Propionibacterium sharmanii}
- b)(2) The production of large amount of \ce{CO2} by extit{Clostridium butylicum}
- c)(3) The production of large amount of \ce{CO2} and \ce{H2} by lactic acid bacteria called extit{Lactobacillus}
- d)(4) The production of large amount of \ce{CO2} and \ce{H2} by extit{Trichoderma polysporum}
- Q37.Biotechnology applications
The toxin proteins isolated from extit{Bacillus thuringiensis}, coded by which of the following genes would control cotton bollworms and corn borer, respectively?
- a)(1) extit{cryIAc} and extit{cryIAb}
- b)(2) extit{cryIAc} and extit{cryIIAb}
- c)(3) extit{cryIIAb} and extit{cryIAc}
- d)(4) extit{cryIAc} and extit{cryIIIAc}
- Q38.Ecology and environment
Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for :
- a)(1) Pyramid of number in grassland
- b)(2) Pyramid of energy in pond ecosystem
- c)(3) Pyramid of biomass in grassland
- d)(4) Pyramid of biomass in sea
- Q39.Human Reproduction Health
Choose the correct statement regarding GIFT to overcome infertility.
- a)(1) Ova collected from a female donor are transferred to the uterus of an infertile female.
- b)(2) Early embryos with up to 8 blastomeres are transferred to the uterus of an infertile female.
- c)(3) Early embryos with up to 8 blastomeres are transferred into the fallopian tube of an infertile female.
- d)(4) It is the transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce ovum but can provide suitable environment for fertilization and development.
- Q40.Cell Biology
Choose the correct statements regarding cell organelles and their inclusions. A. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria. B. Rough endoplasmic reticulum bears ribosomes on its surface. C. Both mitochondria and plastids have circular DNA. D. A network of microtubules, microfilaments and intermediate filaments present in the cytoplasm is called cytoskeleton. E. Mitochondrion is a single membrane-bound structure. Choose the correct answer from the options given below :
- a)(1) A and B only
- b)(2) A, B and C only
- c)(3) C, D and E only
- d)(4) B, C and D only
- Q41.Cell Biology
Select the correct statements regarding cell membrane in eukaryotic cell. A. Membrane of human RBCs has approximately 52% protein. B. Major phospholipids are arranged in a bilayer. C. Extensions of the plasma membrane into the cell form mesosomes. D. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium. E. Glycocalyx is present on the outer surface of the plasma membrane. Choose the correct answer from the options given below:
- a)(1) C, D and E only
- b)(2) B, C and E only
- c)(3) A, B and D only
- d)(4) A, C and E only
- Q42.Human Physiology
Match List I with List II related to muscular/skeletal system : List I A. Tetany B. Arthritis C. Myasthenia gravis D. Muscular dystrophy List II I. Inflammation of joints II. Autoimmune disorder affecting neuromuscular junction III. Wild contraction in muscle due to low \ce{Ca++} in body fluid IV. Progressive degeneration of skeletal muscle Choose the correct answer from the options given below:
- a)(1) A-III, B-I, C-II, D-IV
- b)(2) A-I, B-II, C-III, D-IV
- c)(3) A-IV, B-III, C-II, D-I
- d)(4) A-III, B-II, C-I, D-IV
- Q43.Human Evolution
Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is :
- a)(1) Ramapithecus \(\rightarrow\) Homo habilis \(\rightarrow\) Homo erectus \(\rightarrow\) Neanderthal \(\rightarrow\) Homo sapiens
- b)(2) Homo sapiens \(\rightarrow\) Ramapithecus \(\rightarrow\) Homo habilis \(\rightarrow\) Neanderthal \(\rightarrow\) Homo erectus
- c)(3) Homo habilis \(\rightarrow\) Homo erectus \(\rightarrow\) Ramapithecus \(\rightarrow\) Neanderthal \(\rightarrow\) Homo sapiens
- d)(4) Neanderthal \(\rightarrow\) Ramapithecus \(\rightarrow\) Homo habilis \(\rightarrow\) Homo erectus \(\rightarrow\) Homo sapiens
- Q44.Animal Kingdom
The flightless-bird with forelimbs modified as paddle-like structures suited for swimming is known as :
- a)(1) Struthio
- b)(2) Neophron
- c)(3) Aptenodytes
- d)(4) Psittacula
- Q45.Ecology & Environment
Choose the correct statements regarding population interactions between two species. A. In both parasitism and commensalism, only one species benefits and the other species is harmed. B. Both species benefit in mutualism. C. Both species benefit in commensalism. D. In parasitism, only one species benefits and the other species is harmed. E. In amensalism, one species is harmed and the other is unaffected. Choose the correct answer from the options given below:
- a)(1) B and E only
- b)(2) A and B only
- c)(3) B, D and E only
- d)(4) A and D only
- Q46.Animal Anatomy
Choose the correct statements regarding frog's anatomy: A. Hepatic portal system is the special venous connection between liver and intestine. B. There are twelve pairs of cranial nerves arising from the brain. C. The ureters and oviducts open separately into the cloaca in female frogs. D. Hind-brain consists of cerebellum, medulla oblongata and optic lobes. E. Sinus venosus joins the right atrium of heart. Choose the correct answer from the options given below:
- a)B and D only
- b)A, B and C only
- c)A, C and E only
- d)B and C only
- Q47.Animal Classification
The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as:
- a)Aptenodytes
- b)Neophron
- c)Psittacula
- d)Struthio
- Q48.Animal Morphology
Male frogs can be distinguished from female frogs due to the presence of: A. Bulging eyes B. Vocal sacs C. Webbed digits in feet D. Copulatory pad on first digit of fore limbs E. Olive green-coloured skin with dark irregular spots Choose the correct answer from the options given below:
- a)B and D only
- b)B and C only
- c)A and B only
- d)C and E only
- Q49.Animal Classification
A group of researchers procured some fish-like animals and upon investigation the following characters were observed: A. Endoskeleton was made of cartilage. B. Ectoparasitic; as they were found attached on fish skin with their circular sucking mouth. C. Paired fins and scales were absent, but 7 pairs of gill slits were present. Which of the following species of animals did they consider to fit best with these characters?
- a)Petromyzon sp.
- b)Branchiostoma sp.
- c)Scoliodon sp.
- d)Exocoetus sp.
- Q50.Human Physiology
In humans, respiration occurs in the following steps. Arrange these steps in the correct order. A. Diffusion of \ce{O2} and \ce{CO2} between blood and tissues B. Diffusion of \ce{O2} and \ce{CO2} across alveolar membrane C. Pulmonary ventilation by which atmospheric air is drawn in and \ce{CO2} rich alveolar air is released out D. Cellular respiration E. Transport of gases by the blood Choose the correct answer from the options given below:
- a)A, B, C, D, E
- b)E, A, C, D, B
- c)C, B, E, A, D
- d)C, A, B, E, D
- Q51.Cell Biology
Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are
- a)Mitochondria
- b)Lysosomes
- c)Centrosomes
- d)Ribosomes
- Q52.Human Reproduction
Choose the correct statement regarding GIFT to overcome infertility.
- a)Ova collected from a female donor are transferred to the uterus of an infertile female.
- b)Early embryos with up to 8 blastomeres are transferred into the fallopian tube of an infertile female.
- c)It is the transfer of an ovum collected from a donor into the fallopian tube of another female who cannot produce ovum but can provide suitable environment for fertilization and development.
- d)Early embryos with up to 8 blastomeres are transferred to the uterus of an infertile female.
- Q53.Human Physiology
Choose the correct statements regarding muscle contraction. A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. B. The neural signal generates an action potential which causes the release of \(\text{Ca}^{++}\) into sarcoplasm. C. Increase in \(\text{Ca}^{++}\) inactivates the actin for breaking cross bridges. D. Actin binds to the myosin head to form a cross bridge. E. Shortening of sarcomere takes place, by pulling actin filaments towards the centre of 'A' band. Choose the correct answer from the options given below:
- a)C and E only
- b)A, B, D and E only
- c)A and B only
- d)C and D only
- Q54.Biotechnology
Insertion of a foreign DNA at BamHI site in an E. coli cloning vector pBR322 results in the loss of antibiotic resistance towards:
- a)Ampicillin and tetracycline
- b)Tetracycline
- c)Ampicillin
- d)Gentamycin
- Q55.Human Physiology
The specific receptors for neurotransmitters in a synapse are present on
- a)Post-synaptic membrane
- b)Pre-synaptic membrane
- c)Myelin sheath
- d)Schwann cell
- Q56.Human Anatomy
Which of the following statements are correct with reference to human endoskeleton? A. Human skull is monocondylic. B. The joint between any two adjoining vertebrae is a cartilaginous joint. C. In human beings, the number of cervical vertebrae is seven. D. All ribs except the last 2 pairs are bicephalic. E. The occipital bone of skull is articulated with atlas vertebra. Choose the correct answer from the options given below
- a)B, C and E only
- b)C, D and E only
- c)A, B and D only
- d)A, D and E only
- Q57.Biotechnology
The human protein named \(\alpha\)-1-antitrypsin obtained from transgenic animals, is used for treatment of __________.
- a)Alzheimer's disease
- b)Emphysema
- c)Cystic fibrosis
- d)Rheumatoid arthritis
- Q58.Human Physiology
Select the incorrect statements with reference to Rh grouping. A. Erythroblastosis foetalis is a condition observed having foetus with \( ext{Rh}^{- ext{ve}}\) blood and mother with \( ext{Rh}^{+ ext{ve}}\) blood. B. Rh antigen is observed on RBCs in the majority of human beings. C. Before blood transfusion, Rh group should also be matched. D. Rh incompatibility is observed when a pregnant mother is \( ext{Rh}^{+ ext{ve}}\) and the foetus is \( ext{Rh}^{+ ext{ve}}\). E. Erythroblastosis foetalis can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the second child. Choose the answer from the options given below :
- a)(1) B and C only
- b)(2) A and B only
- c)(3) A and E only
- d)(4) C and D only
- Q59.Human Health
Match List I with List II: List I (Drug) | List II (Effect) A. Nicotine | I. Causes sense of euphoria and increased energy B. Morphine | II. Stimulates adrenal gland to release catecholamines into blood circulation C. Heroin | III. Effective sedative and painkiller D. Cocaine | IV. A depressant; slows down body function Choose the correct answer from the options given below :
- a)(1) A-II, B-III, C-IV, D-I
- b)(2) A-III, B-II, C-I, D-IV
- c)(3) A-III, B-II, C-IV, D-I
- d)(4) A-II, B-III, C-I, D-IV
- Q60.Human Muscular System
Match List I with List II related to muscular/skeletal system: List I | List II A. Tetany | I. Inflammation of joints B. Arthritis | II. Autoimmune disorder affecting neuromuscular junction C. Myasthenia gravis | III. Wild contraction in muscle due to low \( ext{Ca}^{++}\) in body fluid D. Muscular dystrophy | IV. Progressive degeneration of skeletal muscle Choose the correct answer from the options given below :
- a)(1) A-IV, B-III, C-II, D-I
- b)(2) A-III, B-I, C-II, D-IV
- c)(3) A-I, B-II, C-III, D-IV
- d)(4) A-III, B-II, C-I, D-IV
- Q61.Human Reproduction
Match List I with List II: List I | List II A. Progestasert | I. Barrier made of rubber used by females B. Multiload 375 | II. Oral contraceptive C. Diaphragm | III. Hormone releasing IUD D. Saheli | IV. Copper releasing IUD Choose the correct answer from the options given below :
- a)(1) A-IV, B-II, C-I, D-III
- b)(2) A-III, B-IV, C-II, D-I
- c)(3) A-III, B-IV, C-I, D-II
- d)(4) A-IV, B-III, C-I, D-II
- Q62.Human Development
Match List I with List II related to embryonic development at various months of pregnancy: List I A. The foetus movement starts and hair appears on the head B. The foetus develops limbs and digits C. The foetus develops external genital organs D. The foetus body is covered with fine hair; eyelids separate and eyelashes are formed List II I. 24 weeks of pregnancy II. 20 weeks of pregnancy III. 8 weeks of pregnancy IV. 12 weeks of pregnancy Choose the correct answer from the options given below:
- a)A-II, B-IV, C-III, D-I
- b)A-III, B-II, C-IV, D-I
- c)A-II, B-III, C-IV, D-I
- d)A-IV, B-II, C-III, D-I
- Q63.Ecology & Environment
Which one of the following is an appropriate example of 'sexual deceit'?
- a)Sea anemone and clown fish
- b)Female wasp and fig
- c)Ophrys and bumblebee
- d)Cuckoo and crow
- Q64.Animal Classification
Select the set of fishes which belong to the class Osteichthyes:
- a)Saw fish, Fighting fish and Dog fish
- b)Devil fish, Cuttlefish and Hagfish
- c)Flying fish, Angel fish and Fighting fish
- d)Starfish, Hagfish and Cuttlefish
- Q65.Reproductive Biology
In which animal do haploid cells divide mitotically to produce gametes?
- a)(1) Male frogs
- b)(2) Male honeybees
- c)(3) Male grasshoppers
- d)(4) Male earthworms
- Q66.Human Blood Components
The WBC count of a person's blood sample is \(8000/ ext{cu.mm}\). How many eosinophils and lymphocytes would be in the same blood sample approximately?
- a)(1) \(300 - 500/ ext{cu.mm}\) and \(500 - 700/ ext{cu.mm}\), respectively
- b)(2) \(300 - 500/ ext{cu.mm}\) and \(1200 - 1500/ ext{cu.mm}\), respectively
- c)(3) \(100 - 120/ ext{cu.mm}\) and \(160 - 200/ ext{cu.mm}\), respectively
- d)(4) \(160 - 240/ ext{cu.mm}\) and \(1600 - 2000/ ext{cu.mm}\), respectively
- Q67.Human Genetics
What is the probability of having children with 'O' blood group, where both mother and father are heterozygous for 'A' and 'B' blood group, respectively?
- a)(1) 50%
- b)(2) 75%
- c)(3) 0%
- d)(4) 25%
- Q68.Human Physiology
Arrange the following events occurring in Renin-Angiotensin mechanism in the correct order: A. Increase in blood pressure and Glomerular filtration rate. B. Reabsorption of \(\ce{Na^+}\) and water from distal parts of tubule due to Aldosterone. C. Fall in Glomerular filtration rate. D. Vasoconstriction by Angiotensin II and release of Aldosterone. E. Renin converts Angiotensinogen into Angiotensin I, followed by Angiotensin II. Choose the correct answer from the options given below:
- a)(1) C, E, D, B, A
- b)(2) A, C, E, B, D
- c)(3) A, D, B, E, C
- d)(4) C, A, B, D, E
- Q69.Ecology Interactions
Choose the correct statements regarding population interactions between two species. A. In both parasitism and commensalism, only one species benefits and the other species is harmed. B. Both species benefit in mutualism. C. Both species benefit in commensalism. D. In parasitism, only one species benefits and the other species is harmed. E. In amensalism, one species is harmed and the other is unaffected. Choose the correct answer from the options given below:
- a)(1) B and E only
- b)(2) B, D and E only
- c)(3) A and B only
- d)(4) A and D only
- Q70.Human Reproduction
Spermatogonia undergo a series of cell divisions to produce sperms. Select the correct statements from the following: A. Spermatogonia always undergo meiotic cell division. B. Primary spermatocytes divide mitotically to produce secondary spermatocytes. C. Secondary spermatocytes, through their second meiotic division, produce haploid spermatids. D. Spermatids produce spermatozoa through mitosis. E. Spermatids transform into spermatozoa by spermiogenesis. Choose the correct answer from the options given below:
- a)C and E only
- b)A, C and E only
- c)B, C and D only
- d)A and E only
- Q71.Parasitic Diseases
The following are the stages of life cycle of Plasmodium. Arrange the stages in the proper order. A. The parasites reproduce asexually in RBCs, bursting the cells. B. The parasites reproduce asexually in liver cells, bursting the cells and releasing into blood. C. Gametocytes develop in RBCs. D. Sporozoites reach the liver through the blood. E. Female mosquito injects sporozoites into humans during bite. Choose the correct answer from the options given below:
- a)E, D, B, A, C
- b)C, A, B, D, E
- c)A, B, C, D, E
- d)E, C, D, B, A
- Q72.Bioactive Molecules
Match List I with List II: List I (Bioactive molecules) List II (Importance) A. Streptokinase B. Statins C. Lipases D. Cyclosporin A I. Immunosuppressive agent II. Removal of clots from the blood vessels III. Blood cholesterol-lowering agent IV. Detergent formulations Choose the correct answer from the options given below:
- a)A-II, B-III, C-I, D-IV
- b)A-IV, B-III, C-II, D-I
- c)A-II, B-III, C-IV, D-I
- d)A-III, B-II, C-IV, D-I
- Q73.Evolutionary Biology
Which of the following is not an example of convergent evolution?
- a)Wings of butterflies and birds
- b)Flippers of penguins and dolphins
- c)Fore limbs of whales and bats
- d)Eyes of octopuses and mammals
- Q74.Microbes in Food
What is the reason behind production of large holes in 'Swiss Cheese'?
- a)The production of large amount of \(\ce{CO2}\) and \(\ce{H2}\) by Trichoderma polysporum
- b)The production of large amount of \(\ce{CO2}\) by Clostridium butylicum
- c)The production of large amount of \(\ce{CO2}\) and \(\ce{H2}\) by lactic acid bacteria called Lactobacillus
- d)The production of large amount of \(\ce{CO2}\) by Propionibacterium sharmantii
- Q75.Human Endocrine System
Match List I with List II: List I A. Cortisol B. Aldosterone C. Cholecystokinin D. Progesterone List II I. Stimulates the formation of alveoli in mammary glands II. Produces anti-inflammatory actions III. Stimulates reabsorption of \ce{Na+} and water from renal tubule IV. Stimulates secretion of pancreatic enzymes and bile juice Choose the correct answer from the options given below:
- a)A-III, B-II, C-IV, D-I
- b)A-IV, B-II, C-I, D-III
- c)A-II, B-III, C-I, D-IV
- d)A-II, B-III, C-IV, D-I
- Q76.Human Reproduction
Arrange the following cell layers/structures around the female gamete from outer to inner side: A. Zona pellucida B. Perivitelline space C. Corona radiata D. Plasma membrane of ovum Choose the correct answer from the options given below:
- a)C, A, D, B
- b)C, A, B, D
- c)D, B, A, C
- d)A, C, B, D
- Q77.Population Ecology
Which of the following equations depicts Verhulst-Pearl logistic population growth?
- a)\(\frac{dN}{dt} = rN \left(\frac{K-N}{N}\right)\)
- b)\(\frac{dN}{dt} = rN \left(\frac{K-N}{K}\right)\)
- c)\(\frac{dN}{dt} = rN \left(\frac{K}{K-N}\right)\)
- d)\(\frac{dN}{dt} = rN \left(\frac{K+N}{K}\right)\)
- Q78.Biotechnology applications
The toxin proteins isolated from \textit{Bacillus thuringiensis}, coded by which of the following genes would control cotton bollworms and corn borer, respectively?
- a)\textit{cryIAc} and \textit{cryIAb}
- b)\textit{cryIIAb} and \textit{cryIAc}
- c)\textit{cryIAc} and \textit{cryIIIAb}
- d)\textit{cryIAc} and \textit{cryIIAb}
- Q79.Human Physiology
The JGA (Juxta Glomerular Apparatus) is a special sensitive region formed by cellular modifications in ______ related to the same nephron.
- a)Proximal convoluted tubule and afferent renal arteriole
- b)Distal convoluted tubule and efferent renal arteriole
- c)Proximal convoluted tubule and efferent renal arteriole
- d)Distal convoluted tubule and afferent renal arteriole
- Q80.Animal Kingdom
Match List I with List II: List I A. Molluscs B. Reptiles C. Adult amphibians D. Amoeba List II I. Pulmonary respiration only II. Branchial respiration III. Cellular respiration IV. Pulmonary and Cutaneous respiration Choose the correct answer from the options given below:
- a)A-III, B-II, C-I, D-IV
- b)A-I, B-II, C-IV, D-III
- c)A-II, B-I, C-III, D-IV
- d)A-II, B-I, C-IV, D-III
- Q81.Molecular Genetics
The sixth mutant codon of beta globin gene causing polymerization of Haemoglobin and change in RBC shape is ______.
- a)CAG
- b)GUG
- c)AUG
- d)GAG
- Q82.Genetics
In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are
- a)(1) females and males, respectively
- b)(2) all males
- c)(3) males and females, respectively
- d)(4) all females
- Q83.Animal Classification
Select the incorrect statements from the following: A. Digestive system in Platyhelminthes is incomplete. B. Bilateral symmetry is a characteristic feature of adult Echinoderms. C. Pseudocoelom is possessed by Aschelminhes. D. Notochord is persistent throughout life in the class Chondrichthyes. E. Members of class Reptilia maintain a constant body temperature. Choose the answer from the options given below:
- a)(1) A and C only
- b)(2) B and E only
- c)(3) C and D only
- d)(4) B and D only
- Q84.Biochemistry
The following reaction depicts the activity of a particular class of enzymes: \( \text{X} \quad \text{Y} \) \( \quad | \quad | \) \( \text{C--C} + \text{E} \longrightarrow \text{X--Y} + \text{C=C} \) (Substrate) (Product) (Product) Identify the enzyme class 'E' from the following options:
- a)(1) Ligases
- b)(2) Transferases
- c)(3) Lyases
- d)(4) Isomerases
- Q85.Ecological pyramids
Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for:
- a)(1) Pyramid of biomass in grassland
- b)(2) Pyramid of biomass in sea
- c)(3) Pyramid of number in grassland
- d)(4) Pyramid of energy in pond ecosystem
- Q86.Human evolution
Evolution of human appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species in the sequence of their appearance is:
- a)(1) Ramapithecus \(\rightarrow\) Homo habilis \(\rightarrow\) Homo erectus \(\rightarrow\) Neanderthal \(\rightarrow\) Homo sapiens
- b)(2) Homo habilis \(\rightarrow\) Homo erectus \(\rightarrow\) Ramapithecus \(\rightarrow\) Neanderthal \(\rightarrow\) Homo sapiens
- c)(3) Homo sapiens \(\rightarrow\) Ramapithecus \(\rightarrow\) Homo habilis \(\rightarrow\) Neanderthal \(\rightarrow\) Homo erectus
- d)(4) Neanderthal \(\rightarrow\) Ramapithecus \(\rightarrow\) Homo habilis \(\rightarrow\) Homo erectus \(\rightarrow\) Homo sapiens
- Q87.Human physiology
Match List I with List II: List I (Respiratory Volume) A. ERV (Expiratory Reserve Volume) B. RV (Residual Volume) C. IRV (Inspiratory Reserve Volume) D. TV (Tidal Volume) List II (Capacity in mL) I. 2500 - 3000 mL II. 500 mL III. 1000 - 1100 mL IV. 1100 - 1200 mL Choose the correct answer from the options given below:
- a)(1) A-I, B-II, C-III, D-IV
- b)(2) A-III, B-IV, C-I, D-II
- c)(3) A-III, B-I, C-IV, D-II
- d)(4) A-I, B-III, C-II, D-IV
- Q88.Biotechnology
Which of the following is used as a clot buster ?
- a)Streptokinase
- b)Penicillin
- c)Cyclosporin A
- d)Statins
- Q89.Bt toxin
The inactive form of Bt toxin is converted to the active form in the insect gut
- a)due to alkaline pH
- b)by proteases
- c)by nucleases
- d)by nucleases
- Q90.Genetic disorders
Given below are two statements: Statement I: Down's syndrome is caused by the absence of one of the X-chromosomes. Statement II: Turner's syndrome is caused by the presence of an additional copy of the chromosomes. In the light of the above statements, choose the correct answer from the options given below:
- a)Both Statement I and Statement II are correct
- b)Both Statement I and Statement II are incorrect
- c)Statement I is correct but Statement II is incorrect
- d)Statement I is incorrect but Statement II is correct
- Q91.Human diseases
Which of the following disease is not sexually transmitted?
- a)Syphilis
- b)Tuberculosis
- c)Gonorrhoea
- d)Genital warts
- Q92.Human reproduction
Sperm motility is due to
- a)flagellar movement
- b)ciliary movement
- c)amoeboid movement
- d)muscular movement
- Q93.Evolution
Natural selection can lead to (a) stabilisation (b) genetic drift (c) directional change (d) disruption Choose the correct answer from the options given below:
- a)(a) only
- b)(a) and (c) only
- c)(a), (b), (c) and (d)
- d)(a) and (d) only
- Q94.Reproductive technology
The method of directly of injecting a sperm into ovum in assisted reproductive technology is called:
- a)Gamete intra fallopian transfer (GIFT)
- b)Zygote intra fallopian transfer (ZIFT)
- c)Intra cytoplasmic sperm injection (ICSI)
- d)Embryo transfer (ET)
- Q95.Human reproduction
Which of the following structure is not a part of the male reproductive system?
- a)Rete testis
- b)Epididymis
- c)Vasa efferentia
- d)Infundibulum
- Q96.Amazon Biodiversity
Arrange the following in descending order of number of species in the Amazonian rain forest. (a) Plants (b) Birds (c) Fishes (d) Invertebrates (e) Mammals Choose the correct answer from the options given below:
- a)(d) \( > \) (a) \( > \) (c) \( > \) (b) \( > \) (e)
- b)(d) \( > \) (a) \( > \) (b) \( > \) (c) \( > \) (e)
- c)(d) \( > \) (b) \( > \) (a) \( > \) (c) \( > \) (e)
- d)(d) \( > \) (b) \( > \) (c) \( > \) (a) \( > \) (e)
- Q97.Human Reproduction
Given below are two statements: Statement I : Ovulation is caused by LH surge leading to rupture of Graafian follicles. Statement II : Graafian follicle remaining after ovulation transform into corpus luteum and secretes large amount of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)Both Statement I and Statement II are correct
- b)Both Statement I and Statement II are incorrect
- c)Statement I is correct but Statement II is incorrect
- d)Statement I is incorrect but Statement II is correct
- Q98.Food Chain
Which of the following are primary consumers in a food chain ?
- a)Parasites
- b)Predators
- c)Herbivores
- d)Carnivores
- Q99.Population Genetics
A population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele A is 0.1, the frequency of aa is
- a)0.01
- b)0.02
- c)0.10
- d)0.99
- Q100.Hormones and functions
Match List-I with List-II. List-I A. Excess growth hormone B. Luteinizing hormone C. Vasopressin D. Oxytocin List-II I. Reabsorption of water and electrolytes in kidney II. Contraction of uterus during child birth III. Acromegaly IV. Ovulation Choose the correct answer from options given below:
- a)A-III, B-IV, C-II, D-I
- b)A-III, B-IV, C-I, D-II
- c)A-II, B-IV, C-I, D-III
- d)A-IV, B-III, C-I, D-II
- Q101.Human Heart
The opening between the right atrium and the right ventricle is guarded by
- a)bicuspid valve
- b)tricuspid valve
- c)semilunar valve
- d)sino-atrial node
- Q102.Animal Respiration
Sponges exchange \(\ce{O2}\) with \(\ce{CO2}\) by
- a)simple diffusion over their entire body surfaces
- b)moist cuticle
- c)tracheal tubes
- d)gills
- Q103.Plant Morphology
How many theca are present in each lobe of a typical bilobed angiosperm anther?
- a)2
- b)6
- c)8
- d)12
- Q104.Human Physiology
Muscle contraction is initiated by a signal sent by the central nervous system by the release of
- a)acetyl choline
- b)acetyl coenzyme A
- c)cyclic guanine monophosphate
- d)cyclic adenine monophosphate
- Q105.Molecular Biology
Which of the following statements about lac-operon is correct ?
- a)Gene i is constitutively expressed
- b)Lactose activates repressor to bind to the operator
- c)Genes i, z, y and a share single common promoter
- d)Galactose can act as an inducer of lac operon
- Q106.Plant Reproduction
Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs ?
- a)Antipodals
- b)Synergids
- c)Central cells
- d)Polar nucleus
- Q107.Plant Seeds
Which of the following plant produces non-albuminous seeds ?
- a)Wheat
- b)Maize
- c)Barley
- d)Pea
- Q108.Plant Genetics
If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm ?
- a)18
- b)36
- c)54
- d)72
- Q109.Human Excretory System
Which of the following statements about the reabsorption process in Henle's loop are correct ? (a) The descending limb of Henle's loop is permeable to water but almost impermeable to electrolytes. (b) Urine gets concentrated in Henle's loop. (c) Reabsorption of Na\(^+\) and water takes place in Henle's loop. (d) Active or passive transport of electrolytes occurs in the ascending limb of Henle's loop. Choose the correct answer from the options given below:
- a)(1) (a) and (b) only
- b)(2) (b), (c) and (d) only
- c)(3) (a), (b) and (d) only
- d)(4) (a), (b) and (c) only
- Q110.Human Anatomy
Which of the following is the correct order of arrangement of vertebrate column from the head to toe ?
- a)(1) Cervical vertebrae, thoracic vertebrae, sacrum, lumbar vertebrae
- b)(2) Sacrum, lumbar vertebrae, thoracic vertebrae, cervical vertebrae
- c)(3) Cervical vertebrae, lumbar vertebrae, thoracic vertebrae, sacrum
- d)(4) Cervical vertebrae, thoracic vertebrae, lumbar vertebrae, sacrum
- Q111.Evolutionary Biology
Which of the following is not evidence for evolution ?
- a)(1) Convergent evolution of traits like wings of birds and butterflies
- b)(2) Palaeontological evidence from fossil records
- c)(3) Embryological support for evolution as proposed by Ernst Heckel
- d)(4) Divergent evolution of anatomical structures such as forelimbs
- Q112.Human Evolution
Given below are two statements : Statement I : Modern Homo sapiens arose in Australia and moved across continents. Statement II : Homo sapiens arose around 75000 to 10000 years ago. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)(1) Both Statement I and Statement II are correct
- b)(2) Both Statement I and Statement II are incorrect
- c)(3) Statement I is correct but Statement II is incorrect
- d)(4) Statement I is incorrect but Statement II is correct
- Q113.Population Ecology
Consider a population of 10 million cells. Given the per-capita birth rate of 0.002 (per unit time) and the per-capita death rate of 0.002 (per unit time), the expected number of cells after 10 generations is
- a)(1) 1 million
- b)(2) 5 million
- c)(3) 10 million
- d)(4) 100 million
- Q114.Molecular Biology
During PCR, primers bind to the DNA strands in the ______ step.
- a)(1) denaturation
- b)(2) extension
- c)(3) annealing
- d)(4) ligation
- Q115.Population Ecology
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The logistic growth model of populations is considered more realistic than the exponential growth model. Reason R : Resources are finite. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)(1) Both A and R are correct and R is the correct explanation of A
- b)(2) Both A and R are correct but R is not the correct explanation of A
- c)(3) A is correct but R is not correct
- d)(4) A is not correct but R is correct
- Q116.Evolutionary Biology
Adaptive radiation in placental mammals and Australian Marsupials leading to similarity between distant species is an example of
- a)(1) divergent evolution
- b)(2) convergent evolution
- c)(3) founder effect
- d)(4) genetic drift
- Q117.Human Physiology
Which of the following are secondary lymphoid organs? (a) Bone marrow (b) Tonsils (c) Spleen (d) Thymus Choose the correct answer from the options given below:
- a)(1) (a) and (b) only
- b)(2) (b) and (c) only
- c)(3) (a) and (d) only
- d)(4) (b) and (d) only
- Q118.Human Physiology
Which of the following hormone is secreted by human placenta ?
- a)(1) hCG
- b)(2) Estrogen
- c)(3) Progesterone
- d)(4) LH
- Q119.Molecular Biology
Which of the following enzymes synthesizes precursor mRNA ?
- a)(1) RNA polymerase I
- b)(2) RNA polymerase II
- c)(3) RNA polymerase III
- d)(4) DNA polymerase
- Q120.Genetics
Given below are two statements : Statement I : Plasmids are extrachromosomal DNA. Statement II : Plasmids are autonomously replicating DNA. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)(1) Both Statement I and Statement II are correct
- b)(2) Both Statement I and Statement II are incorrect
- c)(3) Statement I is correct but Statement II is incorrect
- d)(4) Statement I is incorrect but Statement II is correct
- Q121.Human Genetics
For a person with blood group 'O', which of the following is not a possible combination of parents' blood group genotypes ?
- a)(1) Father : \(I^A i\) and Mother : \(I^B i\)
- b)(2) Father : \(I^A I^A\) and Mother : \(I^B i\)
- c)(3) Father : \(I^A i\) and Mother : \(ii\)
- d)(4) Father : \(I^A i\) and Mother : \(I^A i\)
- Q122.Evolution
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Forelimbs of human and bats are homologous. Reason R : Forelimbs of humans and bats have similar anatomical structure. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)(1) Both A and R are correct and R is the correct explanation of A
- b)(2) Both A and R are true, but R is not the correct explanation of A
- c)(3) A is true but R is false
- d)(4) A is false but R is true
- Q123.Human Reproduction
Colostrum, secreted by mother during initial days of lactation, is abundant in
- a)(1) IgG
- b)(2) IgM
- c)(3) IgA
- d)(4) IgD
- Q124.Ecology
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced. Reason R : Goats were more efficient at browsing than abingdon tortoise. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)(1) Both A and R are correct and R is the correct explanation of A
- b)(2) Both A and R are correct but R is not the correct explanation of A
- c)(3) A is correct but R is not correct
- d)(4) A is not correct but R is correct
- Q125.Human Anatomy
The number of vertebrae in a human is
- a)7
- b)12
- c)26
- d)206
- Q126.Human Neural System
Which of the following is not a part of human central neural system ?
- a)Arachnoid
- b)Dura mater
- c)Pia mater
- d)Pericardium
- Q127.Human Reproduction
Find the correct statements: A. In human pregnancy, the major organ systems are formed at the end of 12 weeks. B. In human pregnancy the major organ systems are formed at the end of 8 weeks. C. In human pregnancy, heart is formed after one month of gestation. D. In human pregnancy, limbs and digits develop by the end of second month. E. In human pregnancy the appearance of hair usually observed in the fifth month. Choose the correct answer from the options given below:
- a)A and E Only
- b)B and C Only
- c)B, C, D and E Only
- d)A, C, D and E Only
- Q128.Human Physiology
Which of the following diagrams is correct with regard to the proximal (P) and distal (D) tubule of the Nephron.
- a)Diagram P shows reabsorption of \(\ce{HCO3^-}\), \(\ce{NaCl}\) and secretion of \(\ce{H+}\), \(\ce{H2O}\). Diagram D shows reabsorption of \(\ce{NaCl}\), \(\ce{H2O}\), \(\ce{HCO3^-}\) and secretion of \(\ce{K+}\), \(\ce{H+}\).
- b)Diagram P shows reabsorption of \(\ce{HCO3^-}\), \(\ce{NaCl}\) and secretion of \(\ce{H+}\), \(\ce{NH3}\). Diagram D shows reabsorption of \(\ce{NaCl}\), \(\ce{H2O}\), \(\ce{HCO3^-}\) and secretion of \(\ce{K+}\), \(\ce{H+}\).
- c)Diagram P shows reabsorption of \(\ce{HCO3^-}\), \(\ce{NaCl}\) and secretion of \(\ce{H+}\), \(\ce{NH3}\). Diagram D shows reabsorption of \(\ce{H2O}\), \(\ce{HCO3^-}\) and secretion of \(\ce{NaCl}\), \(\ce{H+}\).
- d)Diagram P shows reabsorption of \(\ce{NaCl}\), \(\ce{HCO3^-}\) and secretion of \(\ce{H+}\), \(\ce{H2O}\). Diagram D shows reabsorption of \(\ce{NaCl}\), \(\ce{NH3}\) and secretion of \(\ce{K+}\), \(\ce{H2O}\).
- Q129.Biotechnology
Given below are two statements: Statement I: The DNA fragments extracted from gel electrophoresis can be used in construction of recombinant DNA. Statement II: Smaller size DNA fragments are observed near anode while larger fragments are found near the wells in an agarose gel. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)Both statement I and statement II are correct
- b)Both statement I and statement II are incorrect
- c)Statement I is correct but statement II is incorrect
- d)Statement I is incorrect but statement II is correct
- Q130.Biochemistry
Match List I with List II. List I A. Adenosine B. Adenylic acid C. Adenine D. Alanine List II I. Nitrogen base II. Nucleotide III. Nucleoside IV. Amino acid Choose the option with all correct matches.
- a)A-III, B-IV, C-II, D-I
- b)A-III, B-II, C-IV, D-I
- c)A-III, B-II, C-I, D-IV
- d)A-II, B-III, C-I, D-IV
- Q131.Human Reproduction
Consider the following: A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis. B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females. C. The first polar body is associated with the formation of the primary oocyte. D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding. Choose the correct answer from the options given below:
- a)A and B are true
- b)A and C are true
- c)B and D are true
- d)B and C are true
- Q132.Animal Classification
All living members of the class Cyclostomata are:
- a)Free living
- b)Endoparasite
- c)Symbiotic
- d)Ectoparasite
- Q133.Cell Biology
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell. Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus. In the light of the above statements, choose the correct answer from the options given below:
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
- Q134.Plant Morphology
Match List I with List II. List I A. Scutellum B. Non-albuminous seed C. Epiblast D. Perisperm List II I. Persistent nucellus II. Cotyledon of Monocot seed III. Groundnut IV. Rudimentary cotyledon Choose the option with all correct matches.
- a)A-II, B-III, C-IV, D-I
- b)A-IV, B-III, C-I, D-II
- c)A-IV, B-II, C-I, D-II
- d)A-II, B-IV, C-III, D-I
- Q135.Animal Classification
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 vertebrate. Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults. In the light of the above statements, choose the correct answer from the options given below:
- a)Both A and R are true and R is the correct explanation of A
- b)Both A and R are true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
- Q136.Immunology
Identify the statement that is NOT correct.
- a)Each antibody has two light and two heavy chains.
- b)The heavy and light chains are held together by disulfide bonds.
- c)Antigen binding site is located at C-terminal region of antibody molecules.
- d)Constant region of heavy and light chains are located at C-terminus of antibody molecules.
- Q137.Molecular Biology
Silencing of specific mRNA is possible via RNAi because of -
- a)Complementary dsRNA
- b)Inhibitory ssRNA
- c)Complementary tRNA
- d)Non-complementary ssRNA
- Q138.Genetics
Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?
- a)Phenotypic ratio - 1 : 2 : 1
- b)Phenotypic ratio - 3 : 1
- c)Phenotypic ratio - 9 : 3 : 3 : 1
- d)Phenotypic ratio - 9 : 7
- Q139.Biomolecules
Histones are enriched with -
- a)Lysine & Arginine
- b)Leucine & Lysine
- c)Phenylalanine & Leucine
- d)Phenylalanine & Arginine
- Q140.Human Reproduction
The first menstruation is called:
- a)Menopause
- b)Menarche
- c)Diapause
- d)Ovulation
- Q141.Human Physiology
Match List - I with List - II List - I List - II A. Heart I. Erythropoietin B. Kidney II. Aldosterone C. Gastro-intestinal III. Atrial natriuretic factor D. Adrenal Cortex IV. Secretin Choose the correct answer from the options given below:
- a)A-II, B-I, C-III, D-IV
- b)A-IV, B-III, C-II, D-I
- c)A-I, B-III, C-IV, D-II
- d)A-III, B-I, C-IV, D-II
- Q142.Biochemistry
The protein portion of an enzyme is called:
- a)Cofactor
- b)Coenzyme
- c)Apoenzyme
- d)Prosthetic group
- Q143.Ecosystem productivity
Which of the following is the unit of productivity of an Ecosystem?
- a)\( \text{gm}^{-2} \)
- b)\( \text{KCal m}^{-2} \)
- c)\( \text{KCal m}^{-3} \)
- d)\( (\text{KCal m}^{-2})\text{yr}^{-1} \)
- Q144.Evolutionary biology
Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
- a)Analogy, convergent
- b)Homology, divergent
- c)Homology, convergent
- d)Analogy, divergent
- Q145.Genetics and inheritance
With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in \( \text{F}_3 \) generation.
- a)1/4
- b)1/2
- c)1/8
- d)Zero
- Q146.Human immune system
After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like: A. thymus B. bone marrow C. spleen D. lymph nodes E. Peyer's patches Choose the correct answer from the options given below:
- a)B, C, D only
- b)A, B, C only
- c)E, A, B only
- d)C, D, E only
- Q147.Cell division
What is the main function of the spindle fibers during mitosis?
- a)To separate the chromosomes
- b)To synthesize new DNA
- c)To repair damaged DNA
- d)To regulate cell growth
- Q148.Human endocrine system
Consider the following statements regarding function of adrenal medullary hormones: A. It causes pupillary constriction B. It is a hyperglycemic hormone C. It causes piloerection D. It increases/strength of heart contraction Choose the correct answer from the options given below:
- a)C and D Only
- b)B, C and D Only
- c)A, C and D Only
- d)D Only
- Q149.Human physiology
Why can't insulin be given orally to diabetic patients?
- a)Human body will elicit strong immune response
- b)It will be digested in Gastro-Intestinal (GI) tract
- c)Because of structural variation
- d)Its bioavailability will be increased
- Q150.Molecular biology
Who proposed that the genetic code for amino acids should be made up of three nucleotides?
- a)George Gamow
- b)Francis Crick
- c)Jacque Monod
- d)Franklin Stahl
- Q151.Biodiversity Conservation
Match List-I with List-II. List-I A. The Evil Quartet B. Ex situ conservation C. Lantana camara D. Dodo List-II I. Cryopreservation II. Alien species invasion III. Causes of biodiversity losses IV. Extinction Choose the option with all correct matches.
- a)A-III, B-II, C-I, D-IV
- b)A-III, B-I, C-II, D-IV
- c)A-III, B-IV, C-II, D-I
- d)A-III, B-II, C-IV, D-I
- Q152.Endocrine System
Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?
- a)Luteinizing hormone (LH)
- b)Anti-diuretic hormone (ADH)
- c)Follicle-stimulating hormone (FSH)
- d)Adrenocorticotrophic hormone (ACTH)
- Q153.Animal Kingdom
Role of the water vascular system in Echinoderms is: A. Respiration and Locomotion B. Excretion and Locomotion C. Capture and transport of food D. Digestion and Respiration E. Digestion and Excretion Choose the correct answer from the options given below:
- a)A and B Only
- b)A and C Only
- c)B and C Only
- d)B, D and E Only
- Q154.Human Health
Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?
- a)Acquired Immunity
- b)Innate Immunity
- c)Cell-mediated Immunity
- d)Humoral Immunity
- Q155.Animal Anatomy
In frog, the Renal portal system is a special venous connection that acts to link :
- a)Liver and intestine
- b)Liver and kidney
- c)Kidney and intestine
- d)Kidney and lower part of body
- Q156.Plant Physiology
Which of the following statements about RuBisCO is true? (1) It is active only in the dark. (2) It has higher affinity for oxygen than carbon dioxide. (3) It is an enzyme involved in the photolysis of water. (4) It catalyzes the carboxylation of RuBP.
- a)It is active only in the dark.
- b)It has higher affinity for oxygen than carbon dioxide.
- c)It is an enzyme involved in the photolysis of water.
- d)It catalyzes the carboxylation of RuBP.
- Q157.Biotechnology
Which of the following enzyme(s) are NOT essential for gene cloning? A. Restriction enzymes B. DNA ligase C. DNA mutase D. DNA recombinase E. DNA polymerase Choose the correct answer from the options given below :
- a)C and D only
- b)A and B only
- c)D and E only
- d)B and C only
- Q158.Plant Physiology
Read the following statements on plant growth and development. A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can be involved in promotion as well as inhibition of growth. C. Dedifferentiation is a pre-requisite for re-differentiation. D. Abscisic acid is a plant growth promoter. E. Apical dominance promotes the growth of lateral buds. Choose the option with all correct statements.
- a)A, B, C only
- b)A, C, E only
- c)A, D, E only
- d)B, D, E only
- Q159.Molecular Biology
Which factor is important for termination of transcription?
- a)\(\alpha\) (alpha)
- b)\(\sigma\) (sigma)
- c)\(\rho\) (rho)
- d)\(\gamma\) (gamma)
- Q160.Animal Physiology
Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer from the following : (1) The statement is true for water but false for land (2) The statement is true for both the environment (3) The statement is false for water but true for land (4) The statement is false for both the environment
- a)The statement is true for water but false for land
- b)The statement is true for both the environment
- c)The statement is false for water but true for land
- d)The statement is false for both the environment
- Q161.Human Biology
Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?
- a)They are monozygotic twins.
- b)They are fraternal twins.
- c)They were conceived through in vitro fertilization.
- d)They have 75% identical genetic content.
- Q162.Microbiology
Which of the following microbes is NOT involved in the preparation of household products? A. Aspergillus niger B. Lactobacillus C. Trichoderma polysporum D. Saccharomyces cerevisiae E. Propionibacterium sharmanii Choose the correct answer from the options given below:
- a)A and B only
- b)A and C only
- c)C and D only
- d)C and E only
- Q163.Human Physiology
Match List-I with List-II. List-I A. Progesterone B. Relaxin C. Melanocyte stimulating hormone D. Catecholamines List-II I. Pars intermedia II. Ovary III. Adrenal Medulla IV. Corpus luteum Choose the correct answer from the options given below:
- a)A-IV, B-II, C-I, D-III
- b)A-IV, B-II, C-III, D-I
- c)A-II, B-IV, C-I, D-III
- d)A-III, B-II, C-IV, D-I
- Q164.
The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate. Given below are two statements about this method: Statement I: The blue coloured colonies have DNA insert in the plasmid and they are identified as recombinant colonies. Statement II: The colonies without blue colour have DNA insert in the plasmid and are identified as recombinant colonies. In the light of the above statements, choose the most appropriate answer from the options given below:
- a)Both Statement I and Statement II are correct
- b)Both Statement I and Statement II are incorrect
- c)Statement I is correct but Statement II is incorrect
- d)Statement I is incorrect but Statement II is correct
- Q165.
Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population?
- a)\( \frac{dN}{dt} = r \left( \frac{K - N}{K} \right) \)
- b)\( \frac{dN}{dt} = rN \left( \frac{K - N}{K} \right) \)
- c)\( \frac{dN}{dt} = rN \left( \frac{N - K}{N} \right) \)
- d)\( \frac{dN}{dt} = N \left( r - \frac{K}{K} \right) \)
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