Download DUET Master 2018 DU MSc Zoology Question Paper With Answer Key

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DU MSC Zoology

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1. Which of the following is NOT a characteristic of lakes suffering from organic pollution? [Question ID = 582]
   1. High microbial concentration [Option ID = 2325]
   2. High biochemical oxygen demand [Option ID = 2327]
   3. Low phosphate levels [Option ID = 2328]
   4. Frequent algal blooms [Option ID = 2326]
   Correct Answer :- Low phosphate levels [Option ID = 2328]

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2. Which of the following was probably absent at the time of origin of life ? [Question ID = 546]
   1. Oxygen [Option ID = 2182]
   2. Hydrogen [Option ID = 2181]
   3. Methane [Option ID = 2183]
   4. Carbon dioxide [Option ID = 2184]
   Correct Answer :- Oxygen [Option ID = 2182]

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3. Which of the following genotypes causes Klinefelter syndrome? [Question ID = 530]
   1. XYY [Option ID = 2120]
   2. XO [Option ID = 2117]
   3. XXY [Option ID = 2118]
   4. XX [Option ID = 2119]
   Correct Answer :- XXY [Option ID = 2118]

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4. Which of the following is wrong match for enzyme classification? [Question ID = 601]
   1. EC 2 - Trasnferases [Option ID = 2402]
   2. EC 3- Hydrolases [Option ID = 2403]
   3. EC 1 - Oxidoreductases [Option ID = 2401]
   4. EC 4- Ligases [Option ID = 2404]
   Correct Answer :- EC 4- Ligases [Option ID = 2404]

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5. Which of the following is not a possible explanation for the rapid rate of evolution of beak shape in Darwin's finches? [Question ID = 614]
   1. Strong selection pressure [Option ID = 2455]
   2. Small population size [Option ID = 2456]
   3. High mutation rate [Option ID = 2453]
   4. High emigrations and immigration rate [Option ID = 2454]
   Correct Answer :- High mutation rate [Option ID = 2453]

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6. Which of the following animals is primarily an ectotherm? [Question ID = 542]
   1. Hawk [Option ID = 2165]
   2. Lizard [Option ID = 2166]
   3. Elephant [Option ID = 2168]
   4. Shrew [Option ID = 2167]
   Correct Answer :- Lizard [Option ID = 2166]

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7. Which of the following technique was used by Messelon and Stahl to separate DNA labeled with ¹⁵N from ¹⁴N? [Question ID = 609]
   1. Ion-exchange chromatography [Option ID = 2436]
   2. Molecular-sieve filtration chromatography [Option ID = 2435]
   3. Agarose Gel electrophoresis [Option ID = 2434]
   4. CsCl density gradient centrifugation [Option ID = 2433]
   Correct Answer :- CsCl density gradient centrifugation [Option ID = 2433]

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8. Which of the following molecule is most abundant in living system? [Question ID = 608]
   1. Water [Option ID = 2432]
   2. Cellulose [Option ID = 2430]
   3. Protein [Option ID = 2429]
   4. Starch [Option ID = 2431]
   Correct Answer :- Water [Option ID = 2432]

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9. Which system is active under stress? [Question ID = 536]
   1. Sympathetic nervous system [Option ID = 2142]
   2. Somatic nervous system [Option ID = 2143]
   3. Parasympathetic nervous system [Option ID = 2141]
   4. Complete autonomic nervous system [Option ID = 2144]
   Correct Answer :- Sympathetic nervous system [Option ID = 2142]

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10. Which is the first National park established in India: [Question ID = 583]
    1. Jim Corbet National Park [Option ID = 2329]
    2. Periyar National Park [Option ID = 2332]
    3. Kanziranga National Park [Option ID = 2330]
    4. Kanha National Park [Option ID = 2331]
    Correct Answer :- Jim Corbet National Park [Option ID = 2329]

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11. Doubling time for E. coli is 20 min. If the initial number of bacterium in a culture is 100, what would be number of bacterium after 60 min. [Question ID = 606]
    1. 300 [Option ID = 2422]
    2. 400 [Option ID = 2423]
    3. 100 [Option ID = 2421]
    4. 800 [Option ID = 2424]
    Correct Answer :- 800 [Option ID = 2424]

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12. X-chromosome inactivation [Question ID = 527]
    1. Is the cause of the y chromosome being genetically inactive [Option ID = 2106]
    2. Takes place in humans so that the same X chromosome is inactive in all the cells of a female [Option ID = 2107]
    3. Normally takes place in males but not in females [Option ID = 2105]
    4. Results in genetically turning off one of the two X chromosome in female mammals [Option ID = 2108]
    Correct Answer :- Results in genetically turning off one of the two X chromosome in female mammals [Option ID = 2108]

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13. In ecological succession from pioneer to climax community, the biomass shall: [Question ID = 584]
    1. Increase and then decrease [Option ID = 2334]
    2. Increase continuously [Option ID = 2336]
    3. Decrease [Option ID = 2333]
    4. No relation [Option ID = 2335]
    Correct Answer :- Increase continuously [Option ID = 2336]

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14. Import of glucose by the liver cell: [Question ID = 569]
    1. Is dependent on hydrolysis of ATP [Option ID = 2273]
    2. Is facilitated by GLUT2 [Option ID = 2276]
    3. Occurs throughout the phospholipid bilayer [Option ID = 2275]
    4. Requires expression of GLUT1 on the plasma membrane [Option ID = 2274]
    Correct Answer :- Is facilitated by GLUT2 [Option ID = 2276]

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15. The origin of the jaw in the gnathostomes is the [Question ID = 524]
    1. hyoid [Option ID = 2096]
    2. gill arch [Option ID = 2093]
    3. notochord [Option ID = 2095]
    4. bones supporting the cranium [Option ID = 2094]
    Correct Answer :- gill arch [Option ID = 2093]

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16. The dynamics of which cytoskeletal element changes in a moving amoeba? [Question ID = 568]
    1. Intermediate filaments [Option ID = 2271]
    2. MreB [Option ID = 2272]
    3. Microtubules [Option ID = 2269]
    4. Microfilaments [Option ID = 2270]
    Correct Answer :- Microfilaments [Option ID = 2270]

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17. Repeat core sequences consisting of 2, 3, or 4 base pairs are known as what? [Question ID = 531]
    1. Single nucleotide polymorphisms (SNPs) [Option ID = 2121]
    2. Minisatellites [Option ID = 2123]
    3. Telomeres [Option ID = 2124]
    4. Microsatellites [Option ID = 2122]
    Correct Answer :- Microsatellites [Option ID = 2122]

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18. A haltere is a [Question ID = 551]
    1. Device used by a male insect to attract female for mating [Option ID = 2204]
    2. balancing organ of housefly [Option ID = 2203]
    3. sense organ of butterfly [Option ID = 2201]
    4. modified forewing of beetle [Option ID = 2202]
    Correct Answer :- balancing organ of housefly [Option ID = 2203]

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19. Linolenic (C18: 9,12,15) is an essential fatty acid for human because: [Question ID = 555]
    1. Lenolenic acid is available in fruits [Option ID = 2217]
    2. Lenolenic acid gives much energy that palmitic acid [Option ID = 2219]
    3. It is unsaturated fatty acid [Option ID = 2220]
    4. Human cannot introduce double bond beyond 9-10 carbon of fatty acids [Option ID = 2218]
    Correct Answer :- Human cannot introduce double bond beyond 9-10 carbon of fatty acids [Option ID = 2218]

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20. Passive immunity is obtained by: [Question ID = 589]
    1. Injecting the serum of another animal/individual containing antitoxin [Option ID = 2354]
    2. Our own body cells preparing antibodies [Option ID = 2353]
    3. Blood transfusion and blood clotting [Option ID = 2356]
    4. Drinking medicinal concoctions [Option ID = 2355]
    Correct Answer :- Injecting the serum of another animal/individual containing antitoxin [Option ID = 2354]

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21. 2-amino-3 hydroxy propionic acid is the chemical name for which of the following amino acid: [Question ID = 580]
    1. serine [Option ID = 2320]
    2. valine [Option ID = 2319]
    3. glycine [Option ID = 2317]
    4. alanine [Option ID = 2318]
    Correct Answer :- serine [Option ID = 2320]

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22. Low pH of the lysosomal compartment is maintained by [Question ID = 613]
    1. Glycolysis [Option ID = 2452]
    2. Electron transport chain [Option ID = 2449]
    3. Proton ATPase at the membrane [Option ID = 2450]
    4. Luminal acid production [Option ID = 2451]
    Correct Answer :- Proton ATPase at the membrane [Option ID = 2450]

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23. Kidney of the vertebrate embryo develops from: [Question ID = 591]
    1. Mesoderm [Option ID = 2363]
    2. Archenteron [Option ID = 2364]
    3. Endoderm [Option ID = 2362]
    4. Ectoderm [Option ID = 2361]
    Correct Answer :- Mesoderm [Option ID = 2363]

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24. DNA is genetic material in [Question ID = 563]
    1. Only eukaryotes [Option ID = 2251]
    2. Only Prokaryotes and eukaryotes [Option ID = 2250]
    3. All viruses, prokaryotes, eukaryotes [Option ID = 2249]
    4. Some viruses, all prokaryotes and eukaryotes [Option ID = 2252]
    Correct Answer :- Some viruses, all prokaryotes and eukaryotes [Option ID = 2252]

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25. Which of the following statement is NOT TRUE for a competitive inhibitor in an enzyme catalysed reaction? [Question ID = 600]
    1. Their inhibition can be reversed by increasing the substrate concentration [Option ID = 2400]
    2. They compete with substrate for binding to the active site. [Option ID = 2398]
    3. They are structural analogues of the substrate. [Option ID = 2397]
    4. They increase the Km, and decrease the Vmax. [Option ID = 2399]
    Correct Answer :- They increase the Km, and decrease the Vmax. [Option ID = 2399]

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26. Knee joint is a [Question ID = 548]
    1. fibrous joint [Option ID = 2192]
    2. cartilaginous joint [Option ID = 2191]
    3. collagenous joint [Option ID = 2189]
    4. synovial joint [Option ID = 2190]
    Correct Answer :- synovial joint [Option ID = 2190]

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27. The heaviest organelle in cell is: [Question ID = 556]
    1. Lysosomes [Option ID = 2223]
    2. Ribosomes [Option ID = 2224]
    3. Nucleus [Option ID = 2222]
    4. Mitochondria [Option ID = 2221]
    Correct Answer :- Nucleus [Option ID = 2222]

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28. Wallace's line is present in between [Question ID = 544]
    1. Oriental and Australian regions [Option ID = 2173]
    2. Palaearctic and Ethiopian regions [Option ID = 2176]
    3. Neotropical and Nearctic regions [Option ID = 2175]
    4. Ethiopian and Oriental regions [Option ID = 2174]
    Correct Answer :- Oriental and Australian regions [Option ID = 2173]

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29. In bivalves, which structure secretes pearl? [Question ID = 598]
    1. Nacreous gland. [Option ID = 2392]
    2. Nacreous layer [Option ID = 2391]
    3. Prismatic layer [Option ID = 2390]
    4. Periostracum layer [Option ID = 2389]
    Correct Answer :- Nacreous layer [Option ID = 2391]

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30. Ampicillin inhibits: [Question ID = 559]
    1. Cell wall synthesis in bacterial cells [Option ID = 2236]
    2. RNA synthesis in Bacterial cells [Option ID = 2234]
    3. DNA synthesis in bacterial cells [Option ID = 2233]
    4. Protein synthesis in mammalian cell [Option ID = 2235]
    Correct Answer :- Cell wall synthesis in bacterial cells [Option ID = 2236]

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31. Hiccups can be best described as [Question ID = 534]
    1. sign of somebody remembering you [Option ID = 2136]
    2. vibration of the soft palate during breathing while sleeping [Option ID = 2135]
    3. jerky incomplete inspiration [Option ID = 2134]
    4. forceful sudden expiration [Option ID = 2133]
    Correct Answer :- jerky incomplete inspiration [Option ID = 2134]

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32. At Isoelectric pH the charge on protein is: [Question ID = 553]
    1. Positive charge on protein [Option ID = 2210]
    2. Negative charge on protein [Option ID = 2211]
    3. No charge on protein [Option ID = 2209]
    4. Net charge on protein is zero [Option ID = 2212]
    Correct Answer :- Net charge on protein is zero [Option ID = 2212]

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33. Lac is a material which is [Question ID = 552]
    1. hardened fecal matter of lac insect [Option ID = 2205]
    2. protective secretion deposited by female lac insect [Option ID = 2206]
    3. protective covering secreted by larva [Option ID = 2207]
    4. resin secreted by the plant [Option ID = 2208]
    Correct Answer :- protective secretion deposited by female lac insect [Option ID = 2206]

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34. Hardy-Weinberg's law gives the concept of [Question ID = 586]
    1. natural selection. [Option ID = 2344]
    2. genetic drift [Option ID = 2341]
    3. genetic equilibrium [Option ID = 2343]
    4. mutation [Option ID = 2342]
    Correct Answer :- genetic equilibrium [Option ID = 2343]

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35. The vertical migration of plankton is an instance of [Question ID = 579]
    1. Circadian rythmes [Option ID = 2313]
    2. Circannual rythmes [Option ID = 2314]
    3. photopriodism [Option ID = 2315]
    4. photokinesis. [Option ID = 2316]
    Correct Answer :- Circadian rythmes [Option ID = 2313]

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36. Treadmilling of actin filaments in the steady state occurs at G-actin concentration [Question ID = 565]
    1. Below the Cc of the (-) end [Option ID = 2257]
    2. Above the Cc of the (-) end but below the Cc of the (+) end [Option ID = 2259]
    3. Above the Cc of the (+) end but below the Cc of the (-) end [Option ID = 2260]
    4. Above the Cc of the (+) end [Option ID = 2258]
    Correct Answer :- Above the Cc of the (+) end but below the Cc of the (-) end [Option ID = 2260]

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37. Exon skipping is associated with: [Question ID = 528]
    1. regulatory mutations [Option ID = 2110]
    2. RNA processing mutations [Option ID = 2111]
    3. nonsense mutations [Option ID = 2109]
    4. silent mutations [Option ID = 2112]
    Correct Answer :- RNA processing mutations [Option ID = 2111]

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38. Bile is produced in our body which [Question ID = 557]
    1. Act as a surfactant to emulsify lipids in intestine. [Option ID = 2226]
    2. It has no role associated with our body [Option ID = 2228]
    3. Helps in digestion of starch in intestinbe [Option ID = 2227]
    4. Helps in controlling blood pressure [Option ID = 2225]
    Correct Answer :- Act as a surfactant to emulsify lipids in intestine. [Option ID = 2226]

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39. The inner cell mass of mammalian blastocyst develops into, [Question ID = 578]
    1. all embryonic structures [Option ID = 2311]
    2. embryonic endoderm [Option ID = 2309]
    3. chorio-allantoic placenta [Option ID = 2312]
    4. yolk-sac placenta [Option ID = 2310]
    Correct Answer :- all embryonic structures [Option ID = 2311]

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40. The isoform/s of actin present in muscle cells [Question ID = 566]
    1. beta-actin [Option ID = 2263]
    2. beta-and gamma-actin [Option ID = 2264]
    3. alpha-actin [Option ID = 2261]
    4. alpha and beta-actin [Option ID = 2262]
    Correct Answer :- alpha-actin [Option ID = 2261]

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41. The four postulates of the Chemiosmotic hypothesis accounted for: [Question ID = 574]
    1. ETC, F1-F0 ATPase, cardiolipin and pmf generators [Option ID = 2295]
    2. ETC, F1-F0 ATPase, cardiolipin and anion exchangers [Option ID = 2296]
    3. Cardiolipin [Option ID = 2294]
    4. The four complexes of the electron transport chain (ETC). [Option ID = 2293]
    Correct Answer :- ETC, F1-F0 ATPase, cardiolipin and anion exchangers [Option ID = 2296]

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42. Cilia and flagella contains a contractile protein called: [Question ID = 575]
    1. Myosin [Option ID = 2300]
    2. Tubulin [Option ID = 2298]
    3. Actin [Option ID = 2299]
    4. Dyenin [Option ID = 2297]
    Correct Answer :- Dyenin [Option ID = 2297]

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43. Insects such as Drosophila undergo three molts before undergoing metamorphosis. Molting is controlled by which of the following hormone? [Question ID = 532]
    1. juvenile hormone [Option ID = 2126]
    2. growth hormone [Option ID = 2128]
    3. auxin [Option ID = 2127]
    4. ecdysone [Option ID = 2125]
    Correct Answer :- ecdysone [Option ID = 2125]

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44. Injection of anti-venom to a patient for snake bite is an example of [Question ID = 562]
    1. Artificially acquired active immunity [Option ID = 2246]
    2. Artificially acquired passive immunity [Option ID = 2248]
    3. Naturally acquired active immunity [Option ID = 2245]
    4. Naturally acquired passive immunity [Option ID = 2247]
    Correct Answer :- Artificially acquired passive immunity [Option ID = 2248]

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45. Steroid hormones are synthesized from [Question ID = 558]
    1. Glycogen [Option ID = 2232]
    2. Tryptophan [Option ID = 2229]
    3. Stearic acid [Option ID = 2231]
    4. Cholesterol [Option ID = 2230]
    Correct Answer :- Cholesterol [Option ID = 2230]

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46. When a heterozygous offspring is crossed to homozygous recessive parent, it is called as [Question ID = 533]
    1. Test cross [Option ID = 2129]
    2. Reciprocal cross [Option ID = 2130]
    3. Dihybrid cross [Option ID = 2132]
    4. Monohybrid cross [Option ID = 2131]
    Correct Answer :- Test cross [Option ID = 2129]

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47. Identify the statement that is NOT TRUE for Iron-sulphur clusters [Question ID = 573]
    1. These are prosthetic groups of succinate-coenzyme Q reductase complex. [Option ID = 2289]
    2. These accept and release electrons one at a time [Option ID = 2291]
    3. They contain Fe bonded to inorganic S atoms and S atoms on cysteine residues of proteins [Option ID = 2290]
    4. They are always associated with cytochromes. [Option ID = 2292]
    Correct Answer :- They are always associated with cytochromes. [Option ID = 2292]

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48. Of the early fish, which led to the extant fish of today? [Question ID = 525]
    1. cephalochordates [Option ID = 2099]
    2. acanthodians [Option ID = 2100]
    3. placoderms [Option ID = 2098]
    4. heterostracans [Option ID = 2097]
    Correct Answer :- acanthodians [Option ID = 2100]

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49. Water is a good solvent for inorganic salts because [Question ID = 615]
    1. hydrogen bond [Option ID = 2459]
    2. dielectric constant [Option ID = 2457]
    3. polarity [Option ID = 2458]
    4. conductivity [Option ID = 2460]
    Correct Answer :-

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50. If the sequence of coding strand in a transcription unit is as follows: 5'-GAATTGCCAATTGCAGTC-3', the sequence of mRNA transcribed from the transcription unit would be, [Question ID = 604]
    1. 3'-GAAUUGCCAAUUGCAGUC-5' [Option ID = 2416]
    2. 5'-CUUAACGGUUAACGUCAG-3' [Option ID = 2414]
    3. 5'-GAAUUGCCAAUUGCAGUC-3' [Option ID = 2413]
    4. 5'-GACUGCAAUUGGCAAUUC-3' [Option ID = 2415]
    Correct Answer :- 5'-GAAUUGCCAAUUGCAGUC-3' [Option ID = 2413]

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51. In a Robertsonian translocation fusion occurs at the: [Question ID = 529]
    1. centromeres [Option ID = 2114]
    2. histones [Option ID = 2115]
    3. telomeres [Option ID = 2113]
    4. ends of the long arms [Option ID = 2116]
    Correct Answer :- centromeres [Option ID = 2114]

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52. Symporters are cotransporters that transport: [Question ID = 570]
    1. Cations and anions in the opposite direction. [Option ID = 2278]
    2. Glucose against its concentration gradient. [Option ID = 2280]
    3. Small molecules and gases in the same direction. [Option ID = 2277]
    4. Na+ ions and glucose against the concentration gradient. [Option ID = 2279]
    Correct Answer :- Glucose against its concentration gradient. [Option ID = 2280]

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53. Bidirectional movement of vesicles requires [Question ID = 567]
    1. Kinesin I [Option ID = 2265]
    2. Association of (+) and (-) end-directed motors [Option ID = 2268]
    3. A flexible neck region on the motor protein [Option ID = 2267]
    4. Microtubules and microfilaments [Option ID = 2266]
    Correct Answer :- Association of (+) and (-) end-directed motors [Option ID = 2268]

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54. Pharyngeal gill slits [Question ID = 521]
    1. are not found in protochordates, but are present in vertebrates, at least during the embryonic life [Option ID = 2084]
    2. are found in higher inverterates and vertebrates [Option ID = 2083]
    3. are found in fishes, crabs, snails, aquatic insects [Option ID = 2082]
    4. are unique chordate characteristic [Option ID = 2081]
    Correct Answer :- are unique chordate characteristic [Option ID = 2081]

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55. Three pg of a hypothetical protein-X is present in a cell. How many molecules of protein-X would be present in a cell, if the molecular weight of the protein is 30000? (Given, Avogaro's number is 6 x 10²³) [Question ID = 610]
    1. 6 x 10¹⁵ [Option ID = 2439]
       

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