2017 Neet - Biology


1. Which one of the following statements is correct, with reference to enzymes ?




2. A decrease in blood pressure / volume will not cause the release of




3. Which cells of "Crypts of Lieberkuhn" secrete antibacterial lysozyme ?




4. Which of the following are not polymeric?




5. Functional megaspore in an angiosperm develops into ?




6. Myelin sheath is produced by




7. Attractants and rewards are required for




8. Receptor sites for neurotransmitters are present on




9. Coconut fruit is a




10. Adult human RBCs are enucleated. Which of the following statement(s) is/are most appropriate explanation for this feature?
(a) They do not need to reproduce
(b) They are somatic cells
(c) They do not metabolize
(d) All their internal space is available for oxygen transport




11. Capacitation occurs in




12. Which of the following are found in extreme saline conditions?




13. Asymptote in a logistic growth curve is obtained when




14. Artificial selection to obtain cows yielding higher milk output represents




15. Select the mismatch:




16. Good vision depends on adequate intake of carotene rich food:
Select the best option from the following statements:
(a) Vitamin A derivatives are formed from carotene
(b) The photopigments are embedded in the membrane discs of the inner segment
(c) Retinal is a derivative of Vitamin A
(d) Retinal is a light absorbing part of all the visual photopigments




17. The DNA fragments separated on an agarose gel can be visualised after staining with




18. The hepatic portal vein drains blood to liver from




19. The vascular cambium normally gives rise to




20. Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement:




21. The genotypes of a husband and Wife are `I^A I^B` and `I^A i`.
Among the blood types of their children, how many different genotypes and phenotypes are possible?




22. Which of the following facilitates opening of stomatal aperture?




23. In Bougainvillea thorns are the modifications of




24. Which one of the following is related to Ex-situ conservation of threatened animals and plants?




25. Root hairs develop from the region of




26. A disease caused by an autosomal primary non-disjunction is




27. The water potential of pure water is




28. Which of the following options gives the correct sequence of events during mitosis?




29. The process of separation and purification of expressed protein before marketing is called




30. A temporary endocrine gland in the human body is




31. Which of the following is made up of dead cells?




32. An example of colonial alga is




33. Match the following sexually transmitted diseases (Column-I) with their causative agent (Column-II) and select the correct option:
Column IColumn II
A. Gonorrhea(1) HIV
B. Syphilis(2) Neisseria
C. Genital Warts(3) Treponema
D. AIDS(4) Human papilloma-Virus





34. The function of copper ions in copper releasing IUD's is




35. Which of the following in sewage treatment removes suspended solids?




36. An important characteristic that Hemichordates share with Chordates is




37. The final proof for DNA as the genetic material came from the experiments of




38. Among the following characters, which one was not considered by Mendel in his experiments on pea?




39. Plants which produce characteristic pneumatophoresand show vivipary belong to




40. The pivot joint between atlas and axis is a type of




41. With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?




42. DNA fragments are




43. Which of the following components provides sticky character to the bacterial cell?




44. Which of the following options best represents the enzyme composition of pancreatic juice ?




45. Which among these is the correct combination of aquatic mammals?




46. Fruit and leaf drop at early stages can be prevented by the application of




47. Select the correct route for the passage of sperms in male frogs:




48. In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?




49. Which ecosystem has the maximum biomass?




50. Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:




51. Presence of plants arranged into well defined vertical layers depending on their height can be seen best in




52. Which of the following statements is correct?




53. Alexander Von Humbolt described for the first time:




54. Zygotic meiosis is characteristic of




55. If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?




56. Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by




57. Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections?




58. Life cycle of Ectocarpus and Fucus respectively are




59. A gene whose expression helps to identify transformed cell is known as




60. A dioecious flowering plant prevents both




61. Which statement is wrong for Krebs' cycle?




62. Phosphoenol pyruvate (PEP) is the primary `CO_2` acceptor in




63. During DNA replication, Okazaki fragments are used to elongate




64. Which of the following RNAs should be most abundant in animal cell?




65. GnRH, a hypothalamic hormone, needed in reproduction, acts on




66. What is the criterion for DN A fragments movement on agarose gel during gel electrophoresis?




67. Hypersecretion of Growth Hormone in adults does not cause further increase in height, because




68. DNA replication in bacteria occurs




69. Which one from those given below is the period for Mendel's hybridization experiments?




70. Viroids differ from viruses in having




71. MALT constitutes about ________ percent of the lymphoid tissue in human body.




72. Which of the following is correctly matched for the product produced by them?




73. Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?




74. Which of the following represents order of 'Horse'?




75. Frog's heart when taken out of the body continues to beat for some time. Select the best option from the following statements.
(a) Frog is a poikilotherm.
(b) Frog does not have any coronary circulation.
(c) Heart is "myogenic" in nature.
(d) Heart is autoexcitable




76. Homozygous purelines in cattle can be obtained by




77. Identify the wrong statement in context of heartwood




78. Anaphase Promoting Complex (APC) is protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?




79. Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?




80. Mycorrhizae are the example of




81. Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation




82. In case of poriferans, the spongocoel is lined with flagellated cells called




83. Which one of the following statements is not valid for aerosols?




84. A baby boy aged two years is admitted to play school and passes through a dental check - up. The dentist observed that the boy had twenty teeth. Which teeth were absent?




85. Select the mismatch




86. The morphological nature of the edible part of coconut is




87. Double fertilization is exhibited by




88. Spliceosomes are not found in cells of




89. The association of histone H1 with a nucleosome indicates




90. The region of Biosphere Reserve which is legally protected and where no human activity is allowed is known as




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