2015 AIMPT - Biology


1. Which one of the following matches is correct?
(1) PhytophthoraAseptate myceliumBasidiomycetes
(2) AlternariaSexual reproduction absentDeuteromycetes
(3) MucorReproduction by conjugationAscomycetes
(4) AgaricusParasitic fungusBasidiomycetes





2. Read the following five statements (A to E) and select the option with all correct statements:
(A) Mosses and Lichens are the first organisms to colonise a bare rock.
(B) Selaginella is a homosporous pteridophyte.
(C) Coralloid roots in Cycas have VAM.
(D) Main plant body in bryophytes is gametophytic, whereas in pteridophytes is sporophytic.
(E) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.




3. In which of the following gametophyte is not independent free living




4. Which one of the following statements is wrong?




5. The guts of cow and buffalo possess




6. Male gametes are flagellated in




7. Vascular bundles in monocotyledons are considered closed because




8. The figure below is the floral formula of






9. A major characteristic of the monocot root is the presence of




10. Keel is the characteristic feature of flower of




11. Perigynous flowers are found in




12. Leaves become modified into spins in




13. The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are




14. The chromosomes in which centromere is situated close to one end are




15. Select the correct matching in the following pairs




16. True nucleus is absent in




17. Which one of the following is not an inclusion body found in prokaryotes?




18. Transpiration and root pressure cause water to rise in plants by




19. Minerals known to be required in large amounts for plant growth include




20. What causes a green plant exposed to the light on only one side to bend toward the source of light as it grows?




21. In a ring girdled plant




22. Typical growth curve in plants is




23. Which one gives the most valid and recent explanation for stomatal movements?




24. The hilum is a scar on the




25. Which one of the following may require pollinators, but is genetically similar to autogamy?




26. Which one of the following statement is not true?




27. Transmission tissue is characteristics feature of




28. In ginger vegetative propagation occurs through




29. Which of the following are the important floral rewards to the animal pollinators?




30. How many pairs of contrasting characters in pea plants were studies by Mendel in his experiments?




31. Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism?




32. A technique of micropropagation is




33. The movement of a gene from one linkage group to another is called




34. Multiple alleles are present




35. Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services?




36. In BT cotton, the BT toxin present in plant tissue as pro-toxin is converted into active toxin due to




37. The crops engineered for glyphosate are resistant/tolerant to




38. DNA is not present in




39. Which of the following enhances or induces fusion of protoplasts?




40. The UN conference of Parties on climate change in the year 2011 was held in




41. Vertical distribution of different species occupying different levels in a biotic community is known as




42. In which of the following both pairs have correct combination?




43. Secondary succession takes place on/in




44. The mass of living material at a trophic level at a particular time is called




45. In an ecosystem the rate of production of organic matter during photosynthesis is termed




46. Which of the following characteristics is mainly responsible for diversification of insects on land?




47. Which of the following endoparasites of humans does show viviparity




48. Which of the following represents the correct combination without any exception?
CharacteristicsClass
(1) Mammary gland; hair on body; pinnae; two pairs of limbsMammalia
(2) Mouth ventral : grills without operculum; skin with placoid scales; persistent notochordChondrichthyes
(3) Sucking and circular mouth; Jaws absent integument without scales; paired appendagesCyclostomata
(4) Body covered with feathers; skin moist and glandular; forelimbs form wings; lungs with air sacsAves





49. Which of the following animals is not viviparous?




50. Erythropoiesis starts in




51. The terga, sterna and pleura of cockroach body are joined by




52. Nuclear envelope is a derivative of




53. Cytochromes are found in




54. Which one of the following statements is incorrect?




55. Select the correct option:
III
(a)Synapsis aligns homologous chromosomesIAnaphase-II
(b)Synthesis of RNA and proteinIIZygotene
(c)Action of enzyme recombinaseIIIG2-Phase
(d)Centromeres do not separate but chromatids move toward opposite polesIVAnaphase-I
VPachytene





56. A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has




57. Which of the following statements is not correct?




58. Gastric juice of infants contains




59. When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?




60. Blood pressure in the mammalian aorta is maximum during




61. Which one of the following is correct?




62. Removal of proximal convoluted tubule from the nephron will result in




63. Sliding filament theory can best explained as




64. Glenoid cavity articulates




65. Which of the following regions of the brain is incorrectly paired with its function?




66. A gymnast is able to balance his body upside down even in the total darkness because of




67. A chemical signal that has both endocrine and neural roles is




68. Which of the following does not favour the formation of large quantities of dilute urine?




69. Capacitation refers to changes in the




70. Which of these is not an important component of initiation of parturition in humans?




71. Which of the following viruses is not transferred through semen of an infected male?




72. Which of the following cells during gametogenesis is normally diploid?




73. Hysterectomy is surgical removal of




74. Which of the following is not sexually transmitted disease?




75. An abnormal human baby with ‘XXX’ sex chromosomes was born due to




76. Alleles are




77. A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offspring?




78. Gene regulation governing lactose operon of E. coli that involves the lac I gene product is




79. In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in the DNA are




80. Which of the following had the smallest brain capacity?




81. A population will not exist in Hardy–Weinberg equilibrium is




82. Match each disease with its correct type of vaccine:
(a)TuberculosisIharmless virus
(b)Whooping coughIIInactivated toxin
(c)DiphtheriaIIIKilled bacteria
(d)PolioIVharmless bacteria





83. HIV that causes AIDS, first starts destroying




84. To active form of Entamoeba histolytica feeds upon




85. High value of BOD (biochemical oxygen demand) indicates that




86. Most animals are tree dwellers in a




87. The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that






88. Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as




89. Rachel Carson’s famous book ‘Silent spring’ is related to




90. Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?




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