Biology Question Paper-26-09-2021 1st Shift
| 1. | In-situ conservation of biodiversity is done in ________. |
| | (A) | wild life safari parks |
| | (B) | botanical gardens |
| | (C) | zoological parks |
| | (D) | national parks |
CORRECT ANSWER
(D) national parks
| 2. | Identify the correct sequence of processes involved for DNA amplification in PCR. |
| | (A) | Extension, Annealing, Denaturation. |
| | (B) | Denaturation, Extension, Annealing. |
| | (C) | Denaturation, Annealing, Extension. |
| | (D) | Annealing, Denaturation, Extension. |
CORRECT ANSWER
(C) Denaturation, Annealing, Extension.
| 3. | Respiration maintains the balance of O₂ and CO₂ in atmosphere coupled with |
| | (A) | guttation |
| | (B) | photosynthesis |
| | (C) | combustion |
| | (D) | transpiration |
CORRECT ANSWER
(B) photosynthesis
| 4. | Herkogamy, a mechanical device to bring about cross pollination, is seen in ________ flower. |
| | (A) | Calotropis |
| | (B) | Palms |
| | (C) | Rice |
| | (D) | Salvia |
CORRECT ANSWER
(A) Calotropis
| 5. | Select an INCORRECT statement from the following. |
| | (A) | Catabolic pathway leads to the formation of simple structure from a complex biomolecule. |
| | (B) | Anabolic pathway releases energy in the form of ATP. |
| | (C) | Metabolism is the sum of chemical reactions that take place in each cell of living organism. |
| | (D) | The reservoir of biomolecules in the cell on which enzyme can act to produce useful products is called metabolic pool. |
CORRECT ANSWER
(B) Anabolic pathway releases energy in the form of ATP.
| 6. | A sudden worsening of kidney function due to severe bleeding along with oligouria and elevated levels of serum creatinine in a person may indicate ____. |
| | (A) | kidney stones |
| | (B) | diabetes insipidus |
| | (C) | acute renal failure |
| | (D) | uremia |
CORRECT ANSWER
(C) acute renal failure
| 7. | Which one of the following is a Mendelian disorder? |
| | (A) | Turner’s syndrome |
| | (B) | Phenylketonuria |
| | (C) | Down’s syndrome |
| | (D) | Klinefelter’s syndrome |
CORRECT ANSWER
(B) Phenylketonuria
| 8. | Lymph does NOT contain __________. |
| | (A) | WBCs and platelets |
| | (B) | RBCs and platelets |
| | (C) | macrophages and RBCs |
| | (D) | RBCs and WBCs |
CORRECT ANSWER
(B) RBCs and platelets
| 9. | The DNA sample for the purpose of DNA profiling CANNOT be obtained from __________. |
| | (A) | skin |
| | (B) | root of hair |
| | (C) | blood |
| | (D) | tip of hair |
CORRECT ANSWER
(D) tip of hair
| 10. | Select the INCORRECT statements regarding prolactin. |
| | (A) | It arrests contraction of uterine muscles during pregnancy. |
| | (B) | It activates growth of breast during pregnancy. |
| | (C) | It stimulates secretion of milk after child birth. |
| | (D) | It is under inhibitory control from hypothalamus. |
CORRECT ANSWER
(A) It arrests contraction of uterine muscles during pregnancy.
| 11. | Which one of the following is INCORRECT about Rhizobiuml They are _____. |
| | (A) | aerobic |
| | (B) | motile |
| | (C) | nitrogen fixers |
| | (D) | spore forming |
CORRECT ANSWER
(D) spore forming
| 12. | Bt Corn that produces its own pesticide has adverse effect on ____ population. |
| | (A) | grasshopper |
| | (B) | locust |
| | (C) | aphid |
| | (D) | monarch butterfly |
CORRECT ANSWER
(D) monarch butterfly
| 13. | Given below are two statements. Based on them select the correct option given below. |
| Statement-I:Intraspecific interaction occurs between two different species. |
| Statement-II:Intraspecific interaction is classified into four types. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Statement-I is incorrect but Statement-II is correct. |
| | (C) | Both Statement-I and Statement-II are correct. |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(A) Both Statement-I and Statement-II are incorrect.
| 14. | Fossils of _______ were found in Java. |
| | (A) | Homo habilis |
| | (B) | Dryopithecus |
| | (C) | Homo erectus |
| | (D) | Homo sapiens |
CORRECT ANSWER
(C) Homo erectus
| 15. | Out of 38 ATP molecules gained during aerobic respiration, how many ATP molecules are generated outside mitochondria? |
| | (A) | 34 |
| | (B) | 2 |
| | (C) | 4 |
| | (D) | 8 |
CORRECT ANSWER
(B) 2
| 16. | If the flower is anemophilous which one of the following adaptation will it have? |
| | (A) | Versatile anther |
| | (B) | Spiny pollen grain |
| | (C) | Copious nectar |
| | (D) | Heavy pollen grains |
CORRECT ANSWER
(A) Versatile anther
| 17. | Match the protein in Column-I with its occurrence in Column-II and choose the correct option. |
| | | Column-I | | Column-II |
| | A. | Mucin | I. | pulse |
| | B. | Heparin | II. | saliva |
| | C. | Legumelin | III. | hair |
| | D. | Keratin | IV. | blood |
| |
| | (A) | A-II | B-IV | C-I | D-III |
| | (B) | A-II | B-I | C-III | D-IV |
| | (C) | A-II | B-IV | C-III | D-I |
| | (D) | A-III | B-II | C-I | D-IV |
| |
CORRECT ANSWER
(A) A-II, B-IV, C-I, D-III
| 18. | Given below are two statements with respect to Amniocentesis. |
| Statement-I: It is a process in which amniotic fluid containing foetal cells are studied to see the abnormalities in the developing foetus. |
| Statement-II: It is misused to determine the sex of the unborn child. Choose the most appropriate answer from the options given below. |
| | (A) | Statement-I is incorrect but Statement-II is correct. |
| | (B) | Both Statement-I and Statement-II are correct. |
| | (C) | Both Statement-I and Statement-II are incorrect. |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(B) Both Statement-I and Statement-II are correct.
| 19. | Uric acid stones may form in human body due to ______ and ______. |
| (Choose two of the following) |
| | A. | Genetic disorder of kidney. |
| | B. | High protein diet. |
| | C. | Very less intake of water in body. |
| | D. | Bacterial infection caused by urea splitting bacteria. |
| | (A) | B and D |
| | (B) | A and C |
| | (C) | A and D |
| | (D) | B and C |
CORRECT ANSWER
(D) B and C
| 20. | Which animal is used to investigate role of myc and ras oncogenes in development of breast cancer? |
| | (A) | Sheep |
| | (B) | Fish |
| | (C) | Pig |
| | (D) | Mouse |
CORRECT ANSWER
(D) Mouse
| 21. | Complete the analogy with respect to hormones. |
| Melatonin: tryptophan: : Thyroxine : ________ |
| | (A) | Methionine |
| | (B) | Serine |
| | (C) | Leucine |
| | (D) | Tyrosine |
CORRECT ANSWER
(D) Tyrosine
| 22. | Asexual reproduction of Plasmodium in liver cells or erythrocytes occurs by ________. |
| | (A) | sporozoite |
| | (B) | hypnozoite |
| | (C) | trophozoite |
| | (D) | merozoite |
CORRECT ANSWER
(A) sporozoite
| 23. | Which one of the following conditions increases the rate of heart beat? |
| | (A) | Increased level of epinephrine. |
| | (B) | Increased level of potassium and sodium ions in blood. |
| | (C) | Acidosis. |
| | (D) | Hypoxia. |
CORRECT ANSWER
(A) Increased level of epinephrine.
| 24. | In primary succession on rocks, weathering of rocks resulting in initial soil formation is brought about by ________. |
| | (A) | rooted submerged angiosperms |
| | (B) | crustose lichens |
| | (C) | mosses |
| | (D) | zooplanktons |
CORRECT ANSWER
(B) crustose lichens
| 25. | Which intermediate of Krebs cycle is used as precursor for synthesis of Aspartic acid? |
| | (A) | Oxaloacetate |
| | (B) | Oxalosuccinate |
| | (C) | Succinate |
| | (D) | α - ketoglutarate |
CORRECT ANSWER
(A) Oxaloacetate
| 26. | Select the INCORRECT statements with respect to colostrum. |
| | (A) | Fat content of colostrum is high. |
| | (B) | Fluid secreted by mammary glands soon after child birth is colostrum. |
| | (C) | Colostrum has IgA, lactose and proteins. |
| | (D) | Antibodies in colostrum help in developing resistance for the new born baby. |
CORRECT ANSWER
(A) Fat content of colostrum is high.
| 27. | Frame shift mutations are caused __________. |
| | (A) | due to both insertion or deletion of only a single base pair in DNA. |
| | (B) | only due to deletion of one base pair in DNA. |
| | (C) | only due to insertion of one base pair in DNA. |
| | (D) | due to both insertion or deletion of one or two base pairs in DNA. |
CORRECT ANSWER
(D) due to both insertion or deletion of one or two base pairs in DNA.
| 28. | Given below are two statements. |
| Statement-I: Erythropoietin secreted by kidney is essential for production of RBCs. |
| Statement-II: In haemodialysis, erythropoietin is supplied in dialysate using dialysis machine. |
| In the light of above statements, select the correct option given below. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Statement-I is incorrect but Statement-II is correct. |
| | (C) | Both Statement-I and Statement-II are correct. |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(D) Statement-I is correct but Statement-II is incorrect.
| 29. | A colorblind man marries a carrier woman. The probability of their son being colorblind is _________. |
| | (A) | 100% |
| | (B) | 0% |
| | (C) | 25% |
| | (D) | 50% |
CORRECT ANSWER
(D) 50%
| 30. | Which one of the following is NOT a distinguishing character between dicot and monocot embryo? |
| | (A) | Position of cotyledon/s |
| | (B) | Position of plumule |
| | (C) | Position of radicle |
| | (D) | Number of cotyledons |
CORRECT ANSWER
(C) Position of radicle
| 31. | Golden mustard is enriched with _________. |
| | (A) | Vit B |
| | (B) | Vit E |
| | (C) | Vit A |
| | (D) | Vit C |
CORRECT ANSWER
(C) Vit A
| 32. | Match the terms given in column-I with their explanation in column-II. Choose the correct answer from the options given below. |
| | | Column-I | | Column-II |
| | A. | Eurythermal | I. | can tolerate only a narrow range of salinity. |
| | B. | Stenothermal | II. | can tolerate a wide range of salinity. |
| | C. | Euryhaline | III. | can tolerate a wide range of temperature. |
| | D. | Stenohaline | IV. | can tolerate only a narrow range of temperature. |
| |
| | (A) | A-IV | B-III | C-I | D-II |
| | (B) | A-I | B-II | C-III | D-IV |
| | (C) | A-III | B-IV | C-II | D-I |
| | (D) | A-II | B-I | C-III | D-IV |
| |
CORRECT ANSWER
(C) A-III, B-IV, C-II, D-I
| 33. | Correct course of blood flow carrying various hormones from hypothalamus is |
| | (A) | Hypophyseal artery → Hypophyseal portal vein → Superior vena cava. |
| | (B) | Superior vena cava → Hypophyseal vein → Hypophyseal portal vein. |
| | (C) | Hypophyseal portal vein → Hypophyseal vein → Superior vena cava |
| | (D) | Superior vena cava → Hypophyseal artery → Hypophyseal vein. |
CORRECT ANSWER
(C) Hypophyseal portal vein → Hypophyseal vein → Superior vena cava
| 34. | The protein showing polypcptide chain arranged like a spiral helix is _________. |
| | (A) | albumin |
| | (B) | eptone |
| | (C) | keratin |
| | (D) | globin |
CORRECT ANSWER
(C) keratin
| 35. | Carbonic anhydrase enzyme is present in ______. |
| | (A) | WBCs |
| | (B) | Plasma |
| | (C) | RBCs |
| | (D) | Platelets |
CORRECT ANSWER
(C) RBCs
| 36. | Which of the following amino acids have provision of maximum codons in genetic code to specify them? |
| | (A) | Glycine, Methionine and Serine |
| | (B) | Valine, Serine and Arginine |
| | (C) | Leucine, Serine and Arginine |
| | (D) | Leucine, Methionine and Arginine |
CORRECT ANSWER
(C) Leucine, Serine and Arginine
| 37. | Given below are two statements. |
| Statement-I: Conversion of pyruvic acid to acetaldehyde in prokaryotes occurs in cytoplasm. |
| Statement-II : Conversion of pyruvic acid to acetyl CoA in eukaryotes occurs in mitochondria. |
| In the light of above statements, choose the correct answer from the options given below. |
| | (A) | Statement-I is correct but Statement-II is incorrect. |
| | (B) | Statement-I is incorrect but Statement-II is correct. |
| | (C) | Both Statement-I and Statement-II are correct. |
| | (D) | Both Statement-I and Statement-II are incorrect. |
CORRECT ANSWER
(C) Both Statement-I and Statement-II are correct.
| 38. | The single cotyledon of the maize grain is called _____. |
| | (A) | scutellum |
| | (B) | coleorrhiza |
| | (C) | coleoptile |
| | (D) | plumule |
CORRECT ANSWER
(A) scutellum
| 39. | In kidneys, ADH plays a role in _____________. |
| | (A) | reabsorption of water |
| | (B) | reabsorption of glucose, amino acids |
| | (C) | reabsorption of sodium |
| | (D) | diluting the urine |
CORRECT ANSWER
(A) reabsorption of water
| 40. | Diagram given below is V-S of late gastrula. Identify label T’ and name of the germinal layer from which it is formed? |
|  |
| | (A) | amniotic cavity - mesoderm |
| | (B) | coelom - ectoderm |
| | (C) | yolk sac - endoderm |
| | (D) | antrum - endoderm |
CORRECT ANSWER
(C) yolk sac - endoderm
| 41. | Which one of the following pair is an example of saturated fatty acids? |
| | (A) | Linoleic acid and oleic acid. |
| | (B) | Palmitic acid and oleic acid. |
| | (C) | Palmitic acid and stearic acid. |
| | (D) | Palmitic acid and linoleic acid. |
CORRECT ANSWER
(C) Palmitic acid and stearic acid.
| 42. | The _______ is an autosomal recessive trait. |
| | (A) | AB blood group |
| | (B) | Huntington’s disease |
| | (C) | Widow’s peak |
| | (D) | Cystic fibrosis |
CORRECT ANSWER
(D) Cystic fibrosis
| 43. | Which of the following is NOT a technique used to transfer foreign gene directly into the protoplast of the competent host cell? |
| | (A) | Electroporation |
| | (B) | Electrophoresis |
| | (C) | Lipofection |
| | (D) | Ultrasonification |
CORRECT ANSWER
(B) Electrophoresis
| 44. | Which one of the following is NOT a component of biogas? |
| | (A) | CH₄ |
| | (B) | CO₂ |
| | (C) | H₂S |
| | (D) | O₃ |
CORRECT ANSWER
(D) O₃
| 45. | Match the Column-I with Column-II and select the correct option. |
| | | Column-I | | Column-II |
| | A. | Marsupials | I. | Placental mammals |
| | B. | Monotremes | II. | Pouched mammals |
| | C. | Eutherians | III. | Egg laying mammals |
| |
| | (A) | A-II | B-I | C-III |
| | (B) | A-I | B-III | C-II |
| | (C) | A-III | B-I | C-II |
| | (D) | A-II | B-III | C-I |
| |
CORRECT ANSWER
(D) A-II, B-III, C-I
| 46. | In the processing of hnRNA, tailing involves ____. |
| | (A) | addition of methylated guanosine triphosphate at 3'-end |
| | (B) | polyadenylation at 3'-end |
| | (C) | polyadenylation at 5'-end |
| | (D) | addition of methylated guanosine triphosphate at 5'-end |
CORRECT ANSWER
(B) polyadenylation at 3'-end
| 47. | Select the correct statements from the following with respect to glomerulus. |
| | A. | It is a bunch of fine nerve fibres present in Bowman’s capsule. |
| | B. | High hydrostatic pressure developed in it is important for ultrafiltration. |
| | C. | Its walls are fenestrated and are formed of podocytes. |
| | D. | It is formed by a small terminal branch of afferent arteriole. |
| | E. | Blood plasma along with proteins oozes out through glomerular wall into capsular space. |
| | (A) | A, C and E only |
| | (B) | D and E only |
| | (C) | B and D only |
| | (D) | A, B, C and D only |
CORRECT ANSWER
(C) B and D only
| 48. | It is essential that zygote develops to form ________ for successful reproduction. |
| | (A) | cotyledons |
| | (B) | nourishing tissue |
| | (C) | embryo |
| | (D) | integuments |
CORRECT ANSWER
(C) embryo
| 49. | NADH + H⁺ produces how many molecules of ATP during anaerobic respiration? |
| | (A) | 30 |
| | (B) | 2 |
| | (C) | 4 |
| | (D) | 0 |
CORRECT ANSWER
(D) 0
| 50. | Diagram given below shows oogenesis. Identify 'A' and choose the correct answer from options given below. |
|  |
| | (A) | Secondary oocyte - diploid |
| | (B) | Secondary oocyte - haploid |
| | (C) | Primary oocyte - haploid |
| | (D) | Primary oocyte - diploid |
CORRECT ANSWER
(D) Primary oocyte - diploid
| 51. | Match the disaccharide in Column-I with the monosaccharide units of it in Column-II and choose the correct option. |
| | | Column-I | | Column-II |
| | A. | Maltose | I. | glucose and galactose |
| | B. | Sucrose | II. | Glucose and glucose |
| | C. | Lactose | III. | Fructose and glucose |
| |
| | (A) | A-II | B-III | C-I |
| | (B) | A-II | B-I | C-III |
| | (C) | A-III | B-I | C-II |
| | (D) | A-I | B-II | C-III |
| |
CORRECT ANSWER
(A) A-II. B-III, C-I
| 52. | Inner surface of the ventricle in human heart shows several ridges called _______ |
| | (A) | papillary muscles |
| | (B) | chordae tendinae |
| | (C) | gyri |
| | (D) | trabeculae carnae |
CORRECT ANSWER
(D) trabeculae carnae
| 53. | Major biodiversity hubs on earth are in _________. |
| | (A) | north and south poles |
| | (B) | temperate regions |
| | (C) | deserts |
| | (D) | tropical rain forests |
CORRECT ANSWER
(D) tropical rain forests
| 54. | Select the INCORRECT statement with respect to sympathetic nervous system. |
| | (A) | It is also called thoraco lumber outflow. |
| | (B) | It has inhibitory effect on digestive and excretory system. |
| | (C) | Pre ganglionic fibres are short and post ganglionic fibres are long. |
| | (D) | These are cholinergic fibres. |
CORRECT ANSWER
(D) These are cholinergic fibres.
| 55. | cDNA is ____DNA. |
| | (A) | chimeric |
| | (B) | vector |
| | (C) | complementary |
| | (D) | cytoplasmic |
CORRECT ANSWER
(C) complementary
| 56. | Which of the following statements are correct? |
| | I. | Thoracic pressure increases during inspiration. |
| | II. | Activation of pneumotoxic centre stimulates inspiration. |
| | III. | During expiration, pressure gradient operates from lungs to the atmosphere. |
| | IV. | Diaphragm contracts during inspiration |
| | (A) | I and II only |
| | (B) | III and IV only |
| | (C) | II and IV only |
| | (D) | II, III and IV only |
CORRECT ANSWER
(B) III and IV only
| 57. | Given below are two statements. Based on them select the correct option given below. |
| Statement-I: N₂ fixing heterocystic cyanobacteria is Anabaena |
| Statement-II: N₂ fixing Anabaena is symbiotic with lichens. |
| | (A) | Statement-I is correct but Statement-II is incorrect. |
| | (B) | Both Statement-I and Statement-II are correct. |
| | (C) | Both Statement-I and Statement-II are incorrect. |
| | (D) | Statement-I is incorrect but Statement-II is correct. |
CORRECT ANSWER
(B) Both Statement-I and Statement-II are correct.
| 58. | A given habitat has enough resources to support a maximum possible number of a species. This limit beyond which no growth is possible is called its ________ for that species. |
| | (A) | fundamental niche |
| | (B) | biome |
| | (C) | realized niche |
| | (D) | carrying capacity |
CORRECT ANSWER
(D) carrying capacity
| 59. | Hormones secreted by corpus luteum does NOT include _________. |
| | (A) | estrogen |
| | (B) | progesterone |
| | (C) | LH |
| | (D) | inhibin |
CORRECT ANSWER
(C) LH
| 60. | How many ATP molecules are utilized during glycolysis? |
| | (A) | 10 |
| | (B) | 4 |
| | (C) | 2 |
| | (D) | 8 |
CORRECT ANSWER
(C) 2
| 61. | Intine of pollen grain is constituted of _________. |
| | (A) | sporopollenin |
| | (B) | cellulose and pectin |
| | (C) | suberin |
| | (D) | lignin |
CORRECT ANSWER
(B) cellulose and pectin
| 62. | Echinoderms excrete nitrogenous waste material through ___________ |
| | (A) | contractile vacuoles |
| | (B) | green glands |
| | (C) | protonephridia |
| | (D) | tube feet |
CORRECT ANSWER
(D) tube feet
| 63. | How many types of gametes are formed from RrTt? |
| | (A) | 8 |
| | (B) | 4 |
| | (C) | 2 |
| | (D) | 6 |
CORRECT ANSWER
(B) 4
| 64. | If elimination of alleles occurs in a natural population during earthquakes or floods, then it is called ________. |
| | (A) | genetic recombination |
| | (B) | gene flow |
| | (C) | genetic drift |
| | (D) | chromosomal aberration |
CORRECT ANSWER
(C) genetic drift
| 65. | What is the polarity of two strands in the transcription unit of DNA? |
| | (A) | antisense strand -3' → 5' and sense strand -3' → 5' |
| | (B) | sense strand - 3' → 5' and antisense strand -5' → 3' |
| | (C) | antisense strand 3' → 5' and sense strand -5' → 3' |
| | (D) | sense strand - 5' → 3' and antisense strand -5' → 3' |
CORRECT ANSWER
(C) antisense strand 3' → 5' and sense strand -5' → 3'
| 66. | Given below are two statements. |
| Statement-I: Marine organisms are mostly osmoconformers. |
| Statement-II: Body fluids and external environment of marine organisms are iso-osmotic in nature. |
| In the light of above statements, select the most appropriate option given below. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Statement-I is incorrect but Statement-II is correct. |
| | (C) | Both Statement-I and Statement-II are correct. |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(C) Both Statement-I and Statement-II are correct.
| 67. | Select the INCORRECT statement with respect to spinal cord. |
| | (A) | Grey matter is H shaped and present inner to white matter. |
| | (B) | Ventral horns have neurons of autonomic nervous system. |
| | (C) | Ascending tract conducts sensory impulses to brain. |
| | (D) | Bunch of nerves in posterior most region is called cauda equina. |
CORRECT ANSWER
(B) Ventral horns have neurons of autonomic nervous system.
| 68. | Restriction enzymes are used in genetic engineering experiments, because they can ______. |
| | (A) | join the DNA fragments |
| | (B) | degrade the DNA fragment |
| | (C) | cut the DNA at random sites |
| | (D) | cut the DNA at specific sites |
CORRECT ANSWER
(D) cut the DNA at specific sites
| 69. | Given below is a diagram of blood smear. Select correct labels ‘x’ and ‘y’ in the diagram. |
|  |
| | (A) | x - Thrombocyte | ; y - Erythrocytes |
| | (B) | x - Monocyte | ; y - Thrombocyte |
| | (C) | x - Basophil | ; y - Erythrocytes |
| | (D) | x - Erythrocyte | ; y - Thrombocyte |
| |
CORRECT ANSWER
(D) x - Erythrocyte ; y - Thrombocyte
| 70. | The four polypeptide chains in an antibody are held together by ____ bonds. |
| | (A) | phosphodiester |
| | (B) | hydrogen |
| | (C) | glycosidic |
| | (D) | disulfide |
CORRECT ANSWER
(D) disulfide
| 71. | Study the following statements and select the correct option given below. |
| Statement-I: Biodiversity is the variety of features of life observed in the living organisms at different levels within a defined area. |
| Statement-II: Living organisms attempt to accommodate with different environmental conditions forms the basis of diversity. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Statement-I is incorrect but Statement-II is correct. |
| | (C) | Both Statement-I and Statement-II are correct |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(C) Both Statement-I and Statement-II are correct
| 72. | Cloaca serves as an organ of respiration in __________. |
| | (A) | turtle |
| | (B) | sparrow |
| | (C) | lizard |
| | (D) | fish |
CORRECT ANSWER
(A) turtle
| 73. | In Mirabilis jalapa, what will be the phenotypic and genotypic ratios respectively in the F₂ generation, if a Red flowered plant is crossed with a white flowered plant? |
| | (A) | 1:1 and 1:1 |
| | (B) | 1:2:1 and 1:2:1 |
| | (C) | 3:1 and 3:1 |
| | (D) | 3:1 and 1:2:1 |
CORRECT ANSWER
(B) 1:2:1 and 1:2:1
| 74. | Match the process in angiosperms given in column-I with their explanation in column-II. |
| | | Column-I | | Column-II |
| | A. | Porogamy | I. | Fusion of male and female gametes. |
| | B. | Siphonogamy | II. | Abnormal formation of embryo from cell of gametophyte |
| | C. | Apogamy | III. | Entry of pollen tube into ovule through micropyle. |
| | D. | Syngamy | IV. | Transport of male gametes through pollen tube. |
| | Choose the correct answer from options given below. |
| | (A) | A-IV | B-I | C-II | D-III |
| | (B) | A-II | B-III | C-I | D-IV |
| | (C) | A-III | B-IV | C-II | D-I |
| | (D) | A-I | B-II | C-III | D-IV |
| |
CORRECT ANSWER
(C) A-III, B-IV, C-II, D-I
| 75. | Given below are two statements regarding excretory wastes. |
| Statement-I : Excretory products like urea and uric acid are also called metabolic waste products. |
| Statement-II: Excretory products are produced inside body cells. |
| Choose the most appropriate answer from the options given below. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Both Statement-I and Statement-II are correct. |
| | (C) | Statement-I is incorrect but Statement-II is correct. |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(B) Both Statement-I and Statement-II are correct.
| 76. | Meselson and Stahl while performing experiment to prove semiconservative nature of replication, observed that heavy DNA (¹⁵N) can be distinguished from normal DNA by ____________. |
| | (A) | crystallization |
| | (B) | filtration |
| | (C) | chromatography |
| | (D) | centrifugation |
CORRECT ANSWER
(D) centrifugation
| 77. | Match the hormones in column-I with their functions in column-II. Select the correct option given below. |
| | | Column-I | | Column-II |
| | A. | Prolactin | I. | stops secretion of FSH |
| | B. | Inhibin | II. | stimulates ovulation |
| | C. | LH | III. | growth of endometrial glands |
| | D. | Progesterone | IV. | development of lactiferous tubules |
| |
| | (A) | A-IV | B-II | C-I | D-III |
| | (B) | A-III | B-II | C-I | D-IV |
| | (C) | A-III | B-I | C-II | D-IV |
| | (D) | A-IV | B-I | C-II | D-III |
| |
CORRECT ANSWER
(D) A-IV, B-I, C-II, D-III
| 78. | Complete the following equation with respect to cellular respiration. |
| ADP + iP + ____ Kcal → ATP |
| | (A) | 6∙5 |
| | (B) | 7∙0 |
| | (C) | 7∙3 |
| | (D) | 8∙3 |
CORRECT ANSWER
(C) 7∙3
| 79. | Cancer of pituitary gland is a type of _________. |
| | (A) | lymphoma |
| | (B) | adenocarcinoma |
| | (C) | myosarcoma |
| | (D) | carcinoma |
CORRECT ANSWER
(B) adenocarcinoma
| 80. | Match different parts of brain in column-I with their functions in column-II. |
| Select the correct answer from the options given below. |
| | | Column-I | | Column-II |
| | A. | Cerebrum | I. | Equilibrium and balancing orientation |
| | B. | Cerebellum | II. | Memory and intelligence |
| | C. | Medulla oblongata | III. | Homeostasis and secretion of Neurohormones |
| | D. | Hypothalamus | IV. | Heartbeat, Peristalsis |
| |
| | (A) | A-I | B-IV | C-II | D-III |
| | (B) | A-III | B-IV | C-II | D-I |
| | (C) | A-II | B-I | C-IV | D-III |
| | (D) | A-IV | B-III | C-I | D-II |
| |
CORRECT ANSWER
(C) A-II, B-I, C-IV, D-III
| 81. | 'Heitz' proposed which one of the following terms for transcriptionally inactive segments of chromosome? |
| | (A) | Heterochromatin |
| | (B) | Nucleosome |
| | (C) | Solenoid |
| | (D) | Euchromatin |
CORRECT ANSWER
(A) Heterochromatin
| 82. | The water that percolates deep in soil is _________. |
| | (A) | capillary |
| | (B) | gravitational |
| | (C) | combined |
| | (D) | hygroscopic |
CORRECT ANSWER
(B) gravitational
| 83. | Cyclosis is seen in the following EXCEPT ____________. |
| | (A) | Paramoecium |
| | (B) | round worm |
| | (C) | WBCs |
| | (D) | root hair cells in plants |
CORRECT ANSWER
(B) round worm
| 84. | The rate of saltatory conduction of nerve impulse is _______ m/sec. |
| | (A) | 120 |
| | (B) | 50 |
| | (C) | 60 |
| | (D) | 80 |
CORRECT ANSWER
(A) 120
| 85. | Given below are two statements. |
| Statement-I: The law of segregation is often called as the law of purity of gametes. |
| Statement-II: A gene can mutate several times producing a series of alternative expression. |
| In the light of above statements, choose the most appropriate answer from the options given below. |
| | (A) | Statement-I is correct but Statement-II is incorrect. |
| | (B) | Both Statement-I and Statement-II are correct. |
| | (C) | Both Statement-I and Statement-II are incorrect. |
| | (D) | Statement-I is incorrect but Statement-II is correct. |
CORRECT ANSWER
(B) Both Statement-I and Statement-II are correct.
| 86. | Given below are two statements with respect to testes. |
| Statement-I: The cremaster and dartos muscles of scrotum help in drawing testes close or away from the body. |
| Statement-II: This helps in maintaining the temperature of the testes 5-10°C lower than the normal body temperature, necessary for spermatogenesis. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Both Statement-I and Statement-II are correct. |
| | (C) | Statement-I is incorrect but Statement-II is correct. |
| | (D) | Statement-I is correct but Statement-II is incorrect. |
CORRECT ANSWER
(D) Statement-I is correct but Statement-II is incorrect.
| 87. | During fertilization in angiosperms, the pollen tube enters the embryo sac and then ruptures due to the activity of _______. |
| | (A) | antipodals |
| | (B) | synergid |
| | (C) | egg |
| | (D) | secondary nucleus |
CORRECT ANSWER
(B) synergid
| 88. | Excessive breakdown of Red blood cells and increased bilirubin level in liver occurs in___________. |
| | (A) | anaemia |
| | (B) | marasmus |
| | (C) | diarrhoea |
| | (D) | jaundice |
CORRECT ANSWER
(D) jaundice
| 89. | In plants which hormone induces RNA synthesis? |
| | (A) | Cytokinins |
| | (B) | Gibberellins |
| | (C) | Auxins |
| | (D) | ABA |
CORRECT ANSWER
(A) Cytokinins
| 90. | Secondary succession is faster than primary succession because _________. |
| | (A) | climax community already exists. |
| | (B) | it takes place in large amounts of water. |
| | (C) | it starts where no living organisms were present earlier. |
| | (D) | soil or sediment is already present. |
CORRECT ANSWER
(D) soil or sediment is already present.
| 91. | Which one of the following is a host to the protozoan Nosema lacustae? |
| | (A) | Mite |
| | (B) | Grasshopper |
| | (C) | Gypsy moth |
| | (D) | Aphid |
CORRECT ANSWER
(B) Grasshopper
| 92. | Which one of the following is NOT the property of nerve fibres? |
| | (A) | Excitation is brought about by physical, chemical or electrical changes. |
| | (B) | They do not respond for about a millisecond between two successive stimuli. |
| | (C) | Have polarized membrane. |
| | (D) | Subliminal stimulus will produce same degree of impulse as the threshold stimulus. |
CORRECT ANSWER
(D) Subliminal stimulus will produce same degree of impulse as the threshold stimulus.
| 93. | Root hair is cytoplasmic extension of _____ cell, |
| | (A) | epiblemal |
| | (B) | endodermal |
| | (C) | hypodermal |
| | (D) | mesodermal |
CORRECT ANSWER
(A) epiblemal
| 94. | Mind expanding drugs are obtained from __________. |
| | (A) | Atropa belladona |
| | (B) | Cannabis sativa |
| | (C) | Papaver somniferum |
| | (D) | Erythroxylum coca |
CORRECT ANSWER
(A) Atropa belladona
| 95. | Oxygen dissociation curve shifts towards left due to increase in _______ during internal respiration. |
| | (A) | temperature |
| | (B) | pH |
| | (C) | ppCO₂ |
| | (D) | DPG |
CORRECT ANSWER
(B) pH
| 96. | In plants, which hormone promotes bolting? |
| | (A) | Gibberellins |
| | (B) | Cytokinins |
| | (C) | Ethylene |
| | (D) | Auxins |
CORRECT ANSWER
(A) Gibberellins
| 97. | Chemically, chromosomes are mainly composed of ___. |
| | (A) | DNA and proteins |
| | (B) | DNA only |
| | (C) | Proteins and RNA |
| | (D) | DNA and RNA |
CORRECT ANSWER
(A) DNA and proteins
| 98. | If R stands for Round seeds and T for Tall plants, then which of the following groups of genotypes represent Tall and Round seeded pea plants only? |
| | (A) | RrTt, RRTt and RrTT |
| | (B) | rrTT, RRtt and rrTt |
| | (C) | RrTt, Rrtt and rrTt |
| | (D) | rrtt, RRTT and RRtt |
CORRECT ANSWER
(A) RrTt, RRTt and RrTT
| 99. | The secretions of prostate gland contains __________. |
| | (A) | citric acid and acid phosphatase. |
| | (B) | prostaglandins and fibrinogen. |
| | (C) | citric acid and fructose. |
| | (D) | prostaglandins and fructose. |
CORRECT ANSWER
(A) citric acid and acid phosphatase.
| 100. | In a small pond there were altogether 200 carps in the month of January. In the same year 400 carps got added due to reproduction. However at the same time 76 deaths were recorded. What will be the number of carps by the end of the year? |
| | (A) | 524 |
| | (B) | 576 |
| | (C) | 676 |
| | (D) | 624 |
CORRECT ANSWER
(A) 524
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