Biology Question Paper-25-09-2021
| 1. | Which one of the following is unlike other nuclei in the embryo sac of angiosperms regarding ploidy? |
| | (A) | Male gamete nucleus |
| | (B) | Antipodal nucleus |
| | (C) | Secondary nucleus |
| | (D) | Egg nucleus |
CORRECT ANSWER
(C) Secondary nucleus
| 2. | If a person has blood group ‘A’, then antigen A will be present, _______. |
| | (A) | in stroma of RBC |
| | (B) | in plasma of blood |
| | (C) | on plasma membrane of RBC |
| | (D) | on plasma membrane of WBC |
CORRECT ANSWER
(C) on plasma membrane of RBC
| 3. | The patent titled “Control of plant gene expression” is based on a gene producing toxic protein that _______. |
| | (A) | causes allergic reactions. |
| | (B) | has adverse effect on Monarch butterfly population. |
| | (C) | develops resistance to herbicide. |
| | (D) | does not allow seeds to germinate. |
CORRECT ANSWER
(D) does not allow seeds to germinate.
| 4. | Match different cells of Islets of Langerhans in Column-I with their role in Column-II. Select the correct answer from the options given below: |
| | | Column-I | | Column-II |
| | A. | Alpha cells | I. | Stimulates muscles for glycogenesis. |
| | B. | Beta cells | II. | Decreases gastric secretions and absorption in digestive tract. |
| | C. | Delta cells | III. | Inhibits the release of pancreatic juice. |
| | D. | F cells | IV. | Stimulates liver for glucogenolysis. |
| |
| | (A) | A-II | B-III | C-I | D-IV |
| | (B) | A-III | B-II | C-IV | D-I |
| | (C) | A-I | B-IV | C-III | D-II |
| | (D) | A-IV | B-I | C-II | D-III |
| |
CORRECT ANSWER
(D) A-IV, B-I, C-II, D-III
| 5. | What is ubiquinol? |
| | (A) | Co enzyme Q |
| | (B) | Reduced ubiquinone |
| | (C) | Ubiquinone |
| | (D) | Oxidized ubiquinone |
CORRECT ANSWER
(B) Reduced ubiquinone
| 6. | Following are infection sites for syphilis, EXCEPT _______. |
| | (A) | mucous membrane in rectum. |
| | (B) | conjunctiva of eye. |
| | (C) | oral mucous membrane. |
| | (D) | mucous membrane in genital region. |
CORRECT ANSWER
(B) conjunctiva of eye.
| 7. | Rate of breathing in new born is about ____ times per minute, |
| | (A) | 16 |
| | (B) | 20 |
| | (C) | 44 |
| | (D) | 12 |
CORRECT ANSWER
(C) 44
| 8. | The substance upon which an enzyme acts is termed as _______. |
| | (A) | substrate |
| | (B) | prosthetic group |
| | (C) | endoenzyme |
| | (D) | xoenzyme |
CORRECT ANSWER
(A) substrate
| 9. | Nucleic acid was first discovered from _______. |
| | (A) | white blood cells. |
| | (B) | red blood cells. |
| | (C) | Streptococcus pneumoniae. |
| | (D) | bacteriophages. |
CORRECT ANSWER
(A) white blood cells.
| 10. | Based on the Statements regarding dialysis choose the correct answer from options given below. |
| Statement-I: Dialysis is regarded as a ‘holding measure’ until a renal transplant is performed. |
| Statement-II: Sometimes dialysis is only supportive measure in those for whom a transplant is inappropriate.
|
| | (A) | Statement-I is incorrect but Statement-II is correct. |
| | (B) | Statement-I is correct but Statement-II is incorrect. |
| | (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.
| 11. | In brood parasitism _______. |
| | (A) | the eggs after being laid in hosts nest are incubated by parent bird. |
| | (B) | the eggs of one bird are laid in another birds nest who incubates them. |
| | (C) | the parasites egg hatch after the hosts egg. |
| | (D) | the eggs of host bird are destroyed. |
CORRECT ANSWER
(B) the eggs of one bird are laid in another birds nest who incubates them.
| 12. | The spiral configuration of α-helix and β-helix of polypeptide chains are held together by _______ bonds to form secondary structure of protein. |
| | (A) | peptide |
| | (B) | hydrogen |
| | (C) | phosphodiester |
| | (D) | disulphide |
CORRECT ANSWER
(B) hydrogen
| 13. | Select the mismatch pair with respect to hormones. |
| | (A) | Sleep inducing hormone - Melatonin |
| | (B) | Salt retaining hormone - Thyroxine |
| | (C) | Emergency hormone - Adrenaline |
| | (D) | Milk ejecting hormone - Oxytocin |
CORRECT ANSWER
(B) Salt retaining hormone - Thyroxine
| 14. | Which one of the following is a chromosomal disorder ? |
| | (A) | Sickle cell anaemia |
| | (B) | Colorblindness |
| | (C) | Phenylketonuria |
| | (D) | Turner’s syndrome |
CORRECT ANSWER
(D) Turner’s syndrome
| 15. | Number of `NADH+H^+` molecules formed during acetylation from end product of glycolysis in aerobic respiration is _______. |
| | (A) | 3 |
| | (B) | 8 |
| | (C) | 2 |
| | (D) | 6 |
CORRECT ANSWER
(C) 2
| 16. | Heterostyly is a contrivance for _______. |
| | (A) | xenogamy only |
| | (B) | geitonogamy only |
| | (C) | autogamy only |
| | (D) | geitonogamy and xenogamy |
CORRECT ANSWER
(A) xenogamy only
| 17. | Symptoms such as intermittent pain below ribcage in the back and sideways, hazy, pinkish urine along with pain during micturition generally indicate _______. |
| | (A) | diabetes mellitus |
| | (B) | uremia |
| | (C) | kidney stones |
| | (D) | nephritis |
CORRECT ANSWER
(C) kidney stones
| 18. | Which one of the following is a hormone releasing IUD? |
| | (A) | Cu7 |
| | (B) | LNG - 20 |
| | (C) | Multiload 375 |
| | (D) | CuT |
CORRECT ANSWER
(B) LNG - 20
| 19. | The heterochromatin part of chromosome is _______ times more rich in DNA than euchromatin. |
| | (A) | 9 - 12 |
| | (B) | 2 - 3 |
| | (C) | 4 - 6 |
| | (D) | 5 - 8 |
CORRECT ANSWER
(B) 2 - 3
| 20. | Match the terms is Column-I with their explanation in Column-II. |
| | | Column-I | | Column-II |
| | A. | Polycythemia | I. | Decrease in number of WBCs |
| | B. | Erythrocytopenia | II. | Increase in number of RBCs |
| | C. | Leukemia | III. | Decrease in number of RBCs |
| | D. | Leucopenia | IV. | Uncontrolled increase in number of WBCs |
| |
| | (A) | A-IV | B-II | C-I | D-III |
| | (B) | A-III | B-IV | C-II | D-I |
| | (C) | A-II | B-III | C-IV | D-I |
| | (D) | A-I | B-II | C-III | D-IV |
| |
CORRECT ANSWER
(C) A-II, B-III, C-IV, D-I
| 21. | ‘Bt’ cotton contains the gene of a_______. |
| | (A) | protozoan. |
| | (B) | virus. |
| | (C) | bacterium. |
| | (D) | nematode. |
CORRECT ANSWER
(C) bacterium.
| 22. | Sometimes a pregnant woman is injected with ________ hormone to hasten parturition. |
| | (A) | thyroxine |
| | (B) | oxytocin |
| | (C) | FSH |
| | (D) | glucagon |
CORRECT ANSWER
(B) oxytocin
| 23. | “All living beings have equal right to survive irrespective of their known or prospective economic use.” This is ________ reason for conservation of biodiversity. |
| | (A) | constitutional |
| | (B) | narrowly utilitarian |
| | (C) | broad utilitarian |
| | (D) | ethical |
CORRECT ANSWER
(D) ethical
| 24. | During biogas formation which one of the following process is NOT involved in anaerobic digestion of slurry? |
| | (A) | Acidogenesis |
| | (B) | Hydrolysis |
| | (C) | Photolysis |
| | (D) | Methanogenesis |
CORRECT ANSWER
(C) Photolysis
| 25. | Complete the following about the absence of clotting factors. Haemophilia A ::: Haemophilia
B : |
| | | x | y |
| | (A) | IX | VIII |
| | (B) | IX | X |
| | (C) | X | IX |
| | (D) | VIII | IX |
| |
CORRECT ANSWER
(D) VIII IX
| 26. | Which one of the following is the decarboxylated compound formed during TCA cycle? |
| | (A) | Isocitrate |
| | (B) | α-ketoglutarate |
| | (C) | Citrate |
| | (D) | Cis-aconitate |
CORRECT ANSWER
(B) α-ketoglutarate
| 27. | With respect to derivatives of germinal layers in human beings, complete the analogy.
Ectoderm: Sweat glands :: Endoderm: _______. |
| | (A) | Salivary glands |
| | (B) | Mammary gland |
| | (C) | Pineal glands |
| | (D) | Thyroid glands |
CORRECT ANSWER
(D) Thyroid glands
| 28. | Which one of the following is NOT a derivative of cholesterol? |
| | (A) | Testosterone |
| | (B) | Vitamin D |
| | (C) | Progesterone |
| | (D) | Diosgenin |
CORRECT ANSWER
(D) Diosgenin
| 29. | In which of the following plants male flower floats on the surface of water? |
| | (A) | Potamogeton |
| | (B) | Water lily |
| | (C) | Zostera |
| | (D) | Vallisneria |
CORRECT ANSWER
(D) Vallisneria
| 30. | A large increase in blood volume and pressure stimulates atrial wall to produce _______. |
| | (A) | RAAS |
| | (B) | ADH |
| | (C) | ANP |
| | (D) | ACTH |
CORRECT ANSWER
(C) ANP
| 31. | Select the INCORRECT statement regarding transport of respiratory gases. |
| | (A) | `ppO_2` of capillary blood is 40 mm Hg before oxygenation. |
| | (B) | `ppCO_2` of alveolar air is 45 mm Hg. |
| | (C) | Dissociation of oxyhaemoglobin into haemoglobin and oxygen is favored by low `ppCO_2`. |
| | (D) | Alveolar membrane is equally permeable to oxygen and carbon dioxide. |
CORRECT ANSWER
(D) Alveolar membrane is equally permeable to oxygen and carbon dioxide.
| 32. | Which one of the following hormone is produced by β-cells of islets of Langerhans of pancreas? |
| | (A) | Insulin |
| | (B) | Glucagon |
| | (C) | Vasopressin |
| | (D) | Oxytocin |
CORRECT ANSWER
(A) Insulin
| 33. | At the end of replication, the contribution of nucleotides from mother DNA is _______ percent. |
| | (A) | 75 |
| | (B) | 100 |
| | (C) | 25 |
| | (D) | 50 |
CORRECT ANSWER
(D) 50
| 34. | Which one of the following is NOT a psychological disorder? |
| | (A) | Anxiety disorder |
| | (B) | Bipolar disorder |
| | (C) | Autism spectrum disorder |
| | (D) | Pulmonary disorder |
CORRECT ANSWER
(D) Pulmonary disorder
| 35. | Given below are two statements. |
| Statement-I: In root hair outer layer of cell wall is composed of pectin. |
| Statement-II: In root hair inner layer of cell wall is composed of cellulose. |
| Choose the correct answer from the options given below with reference to structure of root hair. |
| | (A) | Both Statement-I and Statement-II are incorrect. |
| | (B) | Statement-I is correct but Statement-II is incorrect. |
| | (C) | Statement-I is incorrect but Statement-II is correct. |
| | (D) | Both Statement-I and Statement-II are correct. |
CORRECT ANSWER
(D) Both Statement-I and Statement-II are correct.
| 36. | Match the following types of adaptations given in Column-I and their examples given in Column-II. Choose the correct answer from the options given below. |
| | | Column-I | | Column-II |
| | A. | Morphological | I. | CAM plants |
| | B. | Physiological | II. | Migration of birds |
| | C. | Behavioural | III. | Leaves reduced to spines in Opuntia |
| |
| | (A) | A-I | B-II | C-III |
| | (B) | A-II | B-I | C-III |
| | (C) | A-I | B-III | C-II |
| | (D) | A-III | B-I | C-II |
| |
CORRECT ANSWER
(D) A-III, B-I, C-II
| 37. | During sewage treatment the activated sludge is present in _______. |
| | (A) | aeration tank. |
| | (B) | sedimentation tank. |
| | (C) | grit chamber. |
| | (D) | settling tank. |
CORRECT ANSWER
(D) settling tank.
| 38. | The smallest WBC is _______. |
| | (A) | monocyte. |
| | (B) | basophil. |
| | (C) | neutrophil. |
| | (D) | lymphocyte. |
CORRECT ANSWER
(D) lymphocyte.
| 39. | Given below are two statements with respect to counter current mechanism. |
| Statement-I: Tissue fluid around descending limb of Henle’s loop becomes concentrated, during counter current mechanism. |
| Statement-II: Water moves out from descending limb of Henle’s loop into tissue fluid by osmosis. |
| In the light of above statements select the correct option from codes 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.
| 40. | Given below is a diagram of an unfertilised egg. Identify 'X' and 'Y' respectively
|
|  |
| | (A) | corona radiata | and zona pellucida |
| | (B) | perivitelline space | and corona radiata |
| | (C) | zona pellucida | and vitelline membrane |
| | (D) | vitelline membrane | and zona pellucida |
| |
CORRECT ANSWER
(A) corona radiata and zona pellucida
| 41. | Given below are two statements. |
| Statement-I: Enzyme pyruvate dehydrogenase is present in mitochondria of eukaryotes. |
| Statement-II: Enzyme pyruvate dehydrogenase is present in cytoplasm of prokaryotes. |
| 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. |
CORRECT ANSWER
(A) Both Statement-I and Statement-II are correct.
| 42. | Polyembryony was first observed by Leeuwenhoek in the seeds of _______. |
| | (A) | Mango |
| | (B) | Orchid |
| | (C) | Papaya |
| | (D) | Citrus |
CORRECT ANSWER
(D) Citrus
| 43. | Identify the correct statement/s regarding unsaturated fatty acids. |
| | A. | They have one or more double bonds between the carbon atoms of hydrocarbon chains. |
| | B. | Are generally solid at room temperature. |
| | C. | Are generally liquid at room temperature. |
| | D. | They do not have any double bonds between the carbon atoms of hydrocarbon chains. |
| | (A) | A, B and C |
| | (B) | only A |
| | (C) | both A and C |
| | (D) | both A and B |
CORRECT ANSWER
(C) both A and C
| 44. | Lac-operon is an example of which one of the following types of regulation of gene expression? |
| | (A) | Translational level |
| | (B) | Regulation of splicing/ processing level |
| | (C) | Transport of mRNA from nucleus to cytoplasm |
| | (D) | Transcriptional level |
CORRECT ANSWER
(D) Transcriptional level
| 45. | Which one of the following cranial nerves does NOT innervate eye muscles? |
| | (A) | Pathetic |
| | (B) | Hypoglossal |
| | (C) | Occulomotor |
| | (D) | Abducens |
CORRECT ANSWER
(B) Hypoglossal
| 46. | The specific site where the DNA is cut by REN’s is called ______ site. |
| | (A) | initiation |
| | (B) | recognition |
| | (C) | ‘ori’ |
| | (D) | termination |
CORRECT ANSWER
(B) recognition
| 47. | Which of the following does NOT contribute to the formation of thoracic cage? |
| | (A) | Ribs |
| | (B) | Diaphragm |
| | (C) | Sternum |
| | (D) | Pleura |
CORRECT ANSWER
(D) Pleura
| 48. | Secondary succession takes place in/on _______. |
| | (A) | newly created pond. |
| | (B) | newly formed volcanic island. |
| | (C) | bare rocky area. |
| | (D) | recently burnt or destroyed forest. |
CORRECT ANSWER
(D) recently burnt or destroyed forest.
| 49. | The fossil of which one of the following has been found in Ethiopia as well as Tanzania? |
| | (A) | Australopithecus |
| | (B) | Dryopithecus |
| | (C) | Homo erectus |
| | (D) | Ramapithecus |
CORRECT ANSWER
(A) Australopithecus
| 50. | The _________ is regarded as an inborn metabolic disorder. |
| | (A) | phenylketonuria |
| | (B) | Thalassemia |
| | (C) | Window’s peak |
| | (D) | sickle cell anemia |
CORRECT ANSWER
(A) phenylketonuria
| 51. | Anaerobic process after glycolysis, during lactic acid formation is called _______. |
| | (A) | HSK pathway |
| | (B) | Fermentation |
| | (C) | Citric acid cycle |
| | (D) | Calvin cycle |
CORRECT ANSWER
(B) Fermentation
| 52. | Which one of the following statements is INCORRECT about angiospermic seed/fruit? |
| | (A) | Fruit development is triggered by hormones produced by developing seeds. |
| | (B) | Coconut is a fleshy fruit. |
| | (C) | The micropyle of the ovule persists in the seed. |
| | (D) | Coconut is a non-endospermic seed. |
CORRECT ANSWER
(D) Coconut is a non-endospermic seed.
| 53. | Vasa recta refers to _______. |
| | (A) | neuronal circuit ofhypothalamus. |
| | (B) | vascular portion of pia mater of CNS. |
| | (C) | juxtaglomerular apparatus of nephrons. |
| | (D) | loop shaped capillary network around Henle’s loop of juxtamedullary nephrons. |
CORRECT ANSWER
(D) loop shaped capillary network around Henle’s loop of juxtamedullary nephrons.
| 54. | Following accessory ducts in human males are in pairs, EXCEPT _______. |
| | (A) | ejaculatory duct |
| | (B) | urethra |
| | (C) | epididymis |
| | (D) | vas deferens |
CORRECT ANSWER
(B) urethra
| 55. | Which one of the following is an example of milk sugar? |
| | (A) | Fructose |
| | (B) | Maltose |
| | (C) | Lactose |
| | (D) | Sucrose |
CORRECT ANSWER
(C) Lactose
| 56. | During translation in protein synthesis, anticodon and codon bind by formation of ______ bond. |
| | (A) | phosphodiester |
| | (B) | peptide |
| | (C) | glycosidic |
| | (D) | hydrogen |
CORRECT ANSWER
(D) hydrogen
| 57. | III ventricle of human brain is connected posteriorly to IV ventricle through _______. |
| | (A) | duct of Bellini |
| | (B) | duct of Sylvius |
| | (C) | foramen of Monroe |
| | (D) | foramen of Magendie |
CORRECT ANSWER
(B) duct of Sylvius
| 58. | How many copies of DNA will be produced in the thermal cycler of PCR after 5 cycles? |
| | (A) | 32 |
| | (B) | 128 |
| | (C) | 64 |
| | (D) | 16 |
CORRECT ANSWER
(A) 32
| 59. | The remnant of the embryonic aperture on the interauricular septum is called _______. |
| | (A) | foramen of Monroe |
| | (B) | foramen of Luschka |
| | (C) | foramen of Magendie |
| | (D) | foramen ovalis |
CORRECT ANSWER
(D) foramen ovalis
| 60. | In the ecological hierarchy the basic unit is _______. |
| | (A) | community. |
| | (B) | biome. |
| | (C) | individual organism. |
| | (D) | population. |
CORRECT ANSWER
(C) individual organism.
| 61. | Which one of the following is NOT correct regarding vaccines? |
| | (A) | It is antigenic protection against particular pathogen. |
| | (B) | It is used to control diseases like measles, polio etc. |
| | (C) | It teaches immune system to recognize and eliminate the pathogenic organism. |
| | (D) | It is introduction of antibodies into animal body. |
CORRECT ANSWER
(D) It is introduction of antibodies into animal body.
| 62. | In Zea mays, color and shape of grain show _________ linkage. |
| | (A) | complete |
| | (B) | incomplete sex |
| | (C) | complete sex |
| | (D) | incomplete |
CORRECT ANSWER
(D) incomplete
| 63. | The cyanobacteria Tolypothrix is associated symbiotically with _______. |
| | (A) | Azolla |
| | (B) | Cycas |
| | (C) | Lichen |
| | (D) | Endomycorrhiza |
CORRECT ANSWER
(C) Lichen
| 64. | In Platyhelminthes and rotifers the excretory organs are _______. |
| | (A) | flame cells. |
| | (B) | green glands. |
| | (C) | nephridia. |
| | (D) | Malpighian tubules. |
CORRECT ANSWER
(A) flame cells.
| 65. | How many of the following statements are true about angiosperms? |
| | A. | The generative cell floats in the cytoplasm of vegetative cell. |
| | B. | The stalk of ovule is called funiculus. |
| | C. | Pollen grains are shed at two celled stage. |
| | D. | Embryo sac is diploid. |
| | E. | Megaspore mother cell towards chalazal end becomes functional. |
| | (A) | D and E only |
| | (B) | A and B only |
| | (C) | B and C only |
| | (D) | A, B and C only |
CORRECT ANSWER
(D) A, B and C only
| 66. | To provide energy for a metabolic process, ATP molecule undergoes _______. |
| | (A) | hydrolysis. |
| | (B) | phosphorylation. |
| | (C) | oxidation. |
| | (D) | dehydrogenation. |
CORRECT ANSWER
(A) hydrolysis.
| 67. | Given below are two statements with respect to Menstrual cycle. |
| Statement-I:Menstrual phase in menstrual cycle occurs when an ovulated egg does not fertilize and thus shed out along with the menstrum. |
| Statement-II:Menstrual phase is called,’ funeral of unfertilized egg’. |
| 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
| 68. | Which one of the following is an arboreal ape ? |
| | (A) | Gibbon |
| | (B) | Orangutan |
| | (C) | Gorilla |
| | (D) | Chimpanzee |
CORRECT ANSWER
(A) Gibbon
| 69. | Choose the INCORRECT statement with respect to T.S. of Artery. |
| | (A) | The outermost tunica externa is thick and tough layer of collagen fibers. |
| | (B) | Arterial lumen is devoid of valves. |
| | (C) | Angular margin around the lumen shows tessellations. |
| | (D) | Tunica media is thin and lumen is wide. |
CORRECT ANSWER
(D) Tunica media is thin and lumen is wide.
| 70. | Which one of the following is the substrate for the activity of restriction endonuclease enzyme? |
| | (A) | Double stranded DNA at VNTR’s only. |
| | (B) | RNA primers used in PCR for gene amplification. |
| | (C) | Single stranded DNA separated by denaturation. |
| | (D) | Specific recognition sites of double stranded DNA. |
CORRECT ANSWER
(D) Specific recognition sites of double stranded DNA.
| 71. | Following are the functions of cerebrospinal fluid EXCEPT _______. |
| | (A) | Helps in binding the neurotransmitter to receptor. |
| | (B) | Acts as shock absorber. |
| | (C) | Exchange of nutrients and waste. |
| | (D) | Maintenance of constant pressure. |
CORRECT ANSWER
(A) Helps in binding the neurotransmitter to receptor.
| 72. | With reference to the Mendelian experiments, which one of the following statements is INCORRECT? |
| | (A) | The alleles occupy identical loci on homologous chromosomes. |
| | (B) | Recessive allele is not expressed in the presence of an alternative allele. |
| | (C) | Allele is an alternative form of a given gene. |
| | (D) | A factor has only one allele. |
CORRECT ANSWER
(D) A factor has only one allele.
| 73. | Flame cells are also called and they are found in animals like |
| | (A) | A - salt excreting glands, | B - marine birds |
| | (B) | A - Protonephridia, | B - rotifers |
| | (C) | A - metanephridia, | B - Echinoderms |
| | (D) | A - nephrons, | B – Crustaceans |
| |
CORRECT ANSWER
(B) A - Protonephridia, B - rotifers
| 74. | India shares about_____% of total biodiversity wealth on earth. |
| | (A) | 8∙1 |
| | (B) | 2∙4 |
| | (C) | 15 |
| | (D) | 12 |
CORRECT ANSWER
(A) 8∙1
| 75. | In neural system, chemical synapse shows synaptic gap of about _______. |
| | (A) | 40 nm to 60 nm |
| | (B) | 60 nm to 80 nm |
| | (C) | 80 nm to 100 nm |
| | (D) | 20 nm to 40 nm |
CORRECT ANSWER
(D) 20 nm to 40 nm
| 76. | Fishes have _____ for respiration. |
| | (A) | book lungs |
| | (B) | book gills |
| | (C) | external gills |
| | (D) | internal gills |
CORRECT ANSWER
(D) internal gills
| 77. | Which one of the following sets contain enzymes coded by structural gene of lac operon of E.colil |
| | (A) | β - galactosidase, β - galactoside permease and transacetylase. |
| | (B) | β - galactosidase, β - galactoside permease and glycogen synthetase. |
| | (C) | β - galactosidase, phosphoglucose isomerase and transacetylase. |
| | (D) | β - galactosidase, β - galactoside permease and helicase. |
CORRECT ANSWER
(A) β - galactosidase, β - galactoside permease and transacetylase.
| 78. | Match the following enzymes in Column-I with their source in Column-II. |
| | | Column-I | | Column-II |
| | A. | Pectinase | I. | Saccharomyces cerevisiae |
| | B. | Lipase | II. | Aspergillus niger |
| | C. | Invertase | III. | Trichoderma konigii |
| | D. | Cellulase | IV. | Candida lipolytica |
| |
| | (A) | A-IV | B-III | C-II | D-I |
| | (B) | A-II | B-I | C-IV | D-III |
| | (C) | A-II | B-III | C-I | D-IV |
| | (D) | A-II | B-IV | C-I | D-III |
| |
CORRECT ANSWER
(D) A-II, B-IV, C-I, D-III
| 79. | Formation of oogonia in human females is completed in _______. |
| | (A) | puberty. |
| | (B) | proliferative phase of menstruation. |
| | (C) | embryonic stage. |
| | (D) | at the time of birth. |
CORRECT ANSWER
(C) embryonic stage.
| 80. | Generally the pigment bilirubin formed by breakdown of haemoglobin is excreted through _______. |
| | (A) | sebum. |
| | (B) | sweat. |
| | (C) | urine. |
| | (D) | faeces. |
CORRECT ANSWER
(D) faeces.
| 81. | In angiosperms, the embryo sac is _______. |
| | (A) | uninucleate. |
| | (B) | multinucleate. |
| | (C) | enucleate. |
| | (D) | binucleate. |
CORRECT ANSWER
(B) multinucleate.
| 82. | How many phenotypes can be obtained if a pea plant (RrTt) is crossed with another pea plant with the same genotype? |
| | (A) | 12 |
| | (B) | 9 |
| | (C) | 4 |
| | (D) | 16 |
CORRECT ANSWER
(C) 4
| 83. | Which of the following is NOT a character of open circulation? |
| | (A) | Respiratory pigment is usually absent. |
| | (B) | Presence of blood capillaries. |
| | (C) | Presence of haemocoel. |
| | (D) | Blood flows with low pressure. |
CORRECT ANSWER
(B) Presence of blood capillaries.
| 84. | Which plant hormone increases rate of respiration? |
| | (A) | Ethylene |
| | (B) | Gibberellins |
| | (C) | Cytokinins |
| | (D) | Auxins |
CORRECT ANSWER
(D) Auxins
| 85. | Which one of the following restriction enzyme has recognition sequence of 4 nucleotides and makes blunt end in the DNA? |
| | (A) | Bam H I |
| | (B) | Hind II |
| | (C) | Alu I |
| | (D) | EcoRI |
CORRECT ANSWER
(C) Alu I
| 86. | Select the correct sequence of stage occurring in primary hydrarch succession. |
| | (A) | submerged plants → reed swamp stage → free floating plants → trees |
| | (B) | submerged plants → free floating plants → reed swamp stage → trees |
| | (C) | reed swamp stage → trees → submerged plants → free floating plants |
| | (D) | free floating plants → submerged plants → trees → reed swamp stage |
CORRECT ANSWER
(B) submerged plants → free floating plants → reed swamp stage → trees
| 87. | The Human Genome Project formally began in and was completed in |
| | | A | B |
| | (A) | 1990 | 2003 |
| | (B) | 1980 | 2001 |
| | (C) | 1993 | 2000 |
| | (D) | 1995 | 2005 |
| |
CORRECT ANSWER
(A) 1990 2003
| 88. | Which one of the following is NOT a cause of diarrhoea? |
| | (A) | Colitis |
| | (B) | Ulcer |
| | (C) | Inflammation of intestine |
| | (D) | Inadequate enzyme secretion |
CORRECT ANSWER
(D) Inadequate enzyme secretion
| 89. | Given below are two statements regarding evolution. |
| Statement-I:Selection against harmful mutations leads to a mutation balance. |
| Statement-II:In mutation balance, the allele frequency of harmful recessives keep on changing generation after generation. |
| In the light of above statements, choose the most appropriate answer from the options given below: |
| | (A) | Both Statement-I and Statement-II are correct. |
| | (B) | Statement-I is correct but Statement-II is incorrect. |
| | (C) | Both Statement-I and Statement-II are incorrect. |
| | (D) | Statement-I is incorrect but Statement-II is correct. |
CORRECT ANSWER
(B) Statement-I is correct but Statement-II is incorrect.
| 90. | In angiosperms, the embryo is developed at ______ of the embryo sac. |
| | (A) | chalazal end |
| | (B) | antipodal side |
| | (C) | micropylar end |
| | (D) | centre |
CORRECT ANSWER
(C) micropylar end
| 91. | In the genome of mouse, the estimated number of genes is _______. |
| | (A) | 19,000 |
| | (B) | 13,000 |
| | (C) | 25,000 |
| | (D) | 33,000 |
CORRECT ANSWER
(C) 25,000
| 92. | In which zone/ region root hairs occur? |
| | (A) | Meristematic region |
| | (B) | Zone of elongation |
| | (C) | Zone of absorption |
| | (D) | Zone of maturation |
CORRECT ANSWER
(C) Zone of absorption
| 93. | Following are sex ratios obtained from a given area. Which one will show evolutionary stable strategy between males and females respectively? |
| | (A) | 1000 : 1015 |
| | (B) | 1000 : 1000 |
| | (C) | 1000 : 800 |
| | (D) | 1015 : 1000 |
CORRECT ANSWER
(B) 1000 : 1000
| 94. | Epstein- barr virus and Human papilloma virus cause _______. |
| | (A) | dermatophytosis |
| | (B) | nasopharyngitis |
| | (C) | pneumonia |
| | (D) | cancer |
CORRECT ANSWER
(D) cancer
| 95. | T-wave in normal ECG represents _______. |
| | (A) | atrial depolarization. |
| | (B) | ventricular repolarization. |
| | (C) | atrial repolarization. |
| | (D) | ventricular depolarization. |
CORRECT ANSWER
(B) ventricular repolarization.
| 96. | A heterozygous tall pea plant was crossed with a dwarf pea plant. The progeny of the cross shows _______. |
| | (A) | 1 Tall : 1 dwarf |
| | (B) | 1 Tall : 3 dwarf |
| | (C) | 3 Tall : 1 dwarf |
| | (D) | 4 Tall : 2 dwarf |
CORRECT ANSWER
(A) 1 Tall : 1 dwarf
| 97. | Which one of the following gland is NOT present in human females? |
| | (A) | Bartholin’s glands |
| | (B) | Endometrial glands |
| | (C) | Bulbourethral glands |
| | (D) | Mammary glands |
CORRECT ANSWER
(C) Bulbourethral glands
| 98. | Abscissic acid causes efflux of_______ ions from guard cells and brings about closure of stomata. |
| | (A) | `Mg^(++)` |
| | (B) | `Na^+` |
| | (C) | `K^+` |
| | (D) | `H^+` |
CORRECT ANSWER
(C) `K^+`
| 99. | Species diversity is bountiful in the tropics near equator because of the following factors EXCEPT_______. |
| | (A) | drastic seasonal climatic changes. |
| | (B) | higher annual rainfall. |
| | (C) | intense sunlight. |
| | (D) | warmer temperatures. |
CORRECT ANSWER
(A) drastic seasonal climatic changes.
| 100. | Symptoms of malaria do NOT include _______. |
| | (A) | sweating and shivering |
| | (B) | conjunctivitis |
| | (C) | fever with chills |
| | (D) | arthralgia |
CORRECT ANSWER
(B) conjunctivitis
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