Page 1 :
14. A typical angiosperm embryo sac at maturity is, Pradeep's A TEXT BOOK OF BIOLOGY (XI), SEXUAL RE, 1/78, 15. Select t, PRACTICE QUESTIONS, I., Multiple Choice Questions, 8. Male gametes in angiosperms are formed by a, division of, 1. Through which cell of the embryosac, does the, pollen tube enter the embryosac ?, (a) Egg cell, (c) Degenerated synergid, (d) Central Cell, 2. Which one of the following represents an ovule,, where the embryosac becomes horse-shoe shaped, and the funiculus and micropyle are close to each, other ?, (b) Vegetative cell, (a) Generative cell, (a) Ce, (b) Ce, (c) Microspore mother cell, (d) Microspore, 9. Identify the wrong statement regarding post., fertilization development, (a) The ovary wall develops into pericarp, (b) The outer integument of the ovule develops into, tegmen, (c) The fusion nucleus (triple fusion) develops into, endosperm, (d) The ovule develops into seed, (e) The ovary develops into fruit, (b) Persistant synergid, (AIPMT 2007), (AIPMT 2005), (c) He, (d) Fr, (e) Fr, (a) Amphitropous, (c) Atropous, (b) Circinotropous, (d) Anatropous, 16. Choo, (010 (a) W, (b) W, (c) Ir, (d) E, (0es (e) E, (AIPMT 2005), 3. In a type of apomixis known as adventive, embryony, embryos develop directly from the, (a) Nucellus or integuments, (b) Zygote, (c) Synergids or antipodals in an embryo sac, (d) Accessory embryo sacs in the ovule, (Kerala PMT 2007), 10. Double fertilization is the process in plants that, includes, 17. One, (a) Syngamy and triple fusion, (b) Only triple fusion, (c) Development of antipodal cells, (d) None of the above gud (DPMT 2007), 11. Endosperm is consumed by developing embryo, in the seed of, (a) I, (b) S, (c) S, (AIPMT 2005), 4. In some plants anthers and stigma grow and, mature at same time. This phenomenon is called, (b) Syngamy, (d) Fusion, (P), (a) Homogamy, 18. Or, of t, (010 (a), (c) Allogamy, (b) Maize, (а) Реа, (c) Coconut, (AFMC Pune 2005), (d) Castor, 5. Double fertilization involves :, (a) Fertilization of the egg by two male gametes, (b) Fertilization of two eggs in the same embryo, sac by two sperms brought by one pollen tube., (c) Fertilization of the egg and the central cell by, two sperms brought by different pollen tubes, (d) Fertilization of the egg and central cell by two, sperms brought by the same pollen, (AIPMT 2008), (c), 19. See, 12. What does the filiform apparatus do at the, entrance into ovule ?, (a), (a) It brings about opening of the pollen tube, (b) It guides pollen tube from a synergid to egg, (c) It helps in the entry of pollen tube into a synergid, (d) It prevents entry of more than one pollen tube, into the embryo sac, (b), (010 (d), 20. A, is, (a), CLIOS (c), al eo, (AIIMS 2005), (AIPMT 2008), 6. Plants of which one of the following groups of, genera are pollinated by the same agency ?, (a) Triticum, Cocos, Mangifera, (b) Ficus, Kigelia, Casuarina, (c) Salvia, Morus, Euphorbia, (d) Bombax, Butea, Bauhinia, 7. Which one of the following is surrounded by a, callose wall ?, 13. Which one of the following pairs of plant, structures has haploid number of chromosomes?, (a) Nucellus and antipodal cells, (b) Egg nucleus and secondary nucleus, (c) Megaspore mother cell and antipodal cells, (d) Egg cell and antipodal cells, 21. In, (a, (c), (AIIMS 2006), (AIPMT 2008), 22. E, (a) Male gamete, (c) Pollen grain, (a, (c, 7 celled, (b) Egg, (d) Microspore mother cell, (a) 4 nucleate - 2 celled (b) 8 nucleate -, (c) 4 nucleate 4 celled (d) 8 nucleate - 4 celle, (e) 2 nucleate 1 celled, ANSWERS, (AIPMT 2007), (Kerala PMT 2008), 15. (c, 25. (a, 1. (c), 2. (a), 3. (a), 4. (a), 11. (a) 12. (b) 13. (d) 14. (b), 5. (d), 6. (d), 7. (d), 8. (a), 9. (b) 10. (a)
Page 2 :
15. Select the correct order of endosperm types, SEXUAL REPRODUCTION IN FLOWERING PLANTS, 1/79, 23. A dicotyledonous plant bears flowers but never, produces fruits and seeds. The most probable, cause for the above situation is, (a) Plant is dioecious and bears only pistillate, flowers, (b) Plant is dioecious and bears both pistillate and, the, staminate flowers, (c) Plant is monoecious, to alei, (a) Cellular, helobial, free nuclear, (b) Cellular, free nuclear, helobial, (c) Helobial, free nuclear, cellular, G (d) Free nuclear, cellular, helobial, (e) Free nuclear, helobial, cellular, (d) Plant is dioecious and bears only staminate, flowers., (NCERT Exemplar), 24. From among the sets of terms given below, iden-, tify those that are associated with gynoecium., (a) Stigma, ovule, embryo sac, placenta, (b) Thalamus, pistil, style, ovule, (c) Ovule, ovary, tapetum, embryo sac, (d) Egg, integument, embryo sac, nucellus, 7), st-, to, (Kerala PMT 2008), 16. Choose the mis-matched option, (OL (a) Wind, (NCERT Exemplar), ito, : Anemophily, : Hydrophily, : Entomophily, Adansonia : Ornithophily, Cannabis, 25. The outermost and innermost wall layers of, microsporangium in an anther are respectively, (a) Endothecium and tapetum, (b) Epidermis and endodermis, (c) Epidermis and middle layers, (are (d) Epidermis and tapetum (NCERT Exemplar), 26. From the statements given below choose the, option that are true for a typical female, gametophyte of a flowering plant :, (i) It is 8-nucleate and 7-celled at maturity, (i) It is free nuclear during development, (iii) It is situated inside the integument but, outside the nucellus, (b) Water, Zoostera, (c) Insects, Salvia, (d) Birds, 7), Kigelia, : Chiropterophily, (Kerala PMT 2008), (e) Bats, at, 17. One advantage of cleistogamy is, (a) It leads to greater genetic diversity., (b) Seed dispersal is more efficient and widespread., (c) Seed set is not dependent on pollinators, 7), (d) Each visit of a pollinator results in transfer of, hundreads of pollen grains., 18. Ornithophily refers to the pollination by which, of the following ?, to, (DPMT 2009), (iv) It has an egg apparatus situated at the, chalazal end., (a) Insects, (b) Birds, (b) (ii) and (iii), (d) (ii) and (iv), (NCERT Exemplar), (a) (i) and (iv), (c) Snails, 19. Seedless banana is, (d) Air (WB JEE 2009), (c) (i) and (ii), e, (a) Parthenocarpic fruit, (b) Multiple fruit, (d) True fruit, 27. In the embryos of a typical dicot and grass, true, homologous structures are, (a) Coleorhiza and Coleoptile, (c) Drupe fruit, (WB JEE 2009), 20. A typical angiospermic embryo sac at maturity, is eight nucleate and, (a) Single celled, (c) Seven celled, द, (b) Coleoptile and Scutellum, (c) Cotyledons and Scutellum, (d) Hypocotyl and Radical (NCERT Exemplar), 28. The phenomenon wherein the ovary develops, into a fruit without fertilization is called :, (a) Parthenocarpy, (c) Asexual reproduction, (d) Sexual reproduction, 29. In a flower, if a megaspore mother cell forms, megaspores without undergoing meiosis and if, one of the megaspores develops into an embryo, sac, its nuclei would be, (b) Four celled, (d) Eight celled, (AMU PMT 2009), 21. In a mature embryo sac the central cell is, (a) Single nucleate, (c) Four nucleate, (b) Apomixis, (b) Binucleate, (d) Eight nucleate, (0105, (NCERT Exemplar), (AMU PMT 2009), 22. Embryo sac is to ovule.. ....is to an anther, (a) Stamen, (c) Pollen grain, (b) Filament, (d) Androecium, (NCERT Exemplar), (6105, ANSWERS, 24. (a), 15. (c), 19. (а), 20. (c) 21. (b) 22. (c) 23. (d), 16. (d), 25. (d) 26. (с) 27. (с), 18. (b), 28. (a), 17. (с)
Page 3 :
Pradeep o n, 38. In double fertilization, (a) Two male gametes fuse with two eggs, 48., 1/80, (b) Diploid, (a) Haploid, (c) A few haploid and a few diploid, (d) With varying ploidy, 30. While planning for an artificial hybridization, programme involving dioecious plants, which of, the following steps will be irrelevant :, (a) Bagging of female flower, (b) Dusting of pollen on stigma, (NCERT Exemplar), other fuses with secondary nucleus, fuses with antipodal, (d) one male gamete fuses with antipodal and, other fuses with diploid nucleus (AMU 2010, 39. A typical dicotyledonous embryo consists of, (a) radical only, (c) cotyledons only, (d) radical, embryonal axis and cotyledons, (b) embryo axis only, (c) Emasculation, (d) Collection of pollen, 31. A particular species of plant produces light, non-, sticky pollens in large numbers and its stigmas, are long and feathery. These modifications, facilitate pollination by :, (NCERT Exemplar), 49, (AMU 2010), (b) Water, (d) Animals, (NCERT Exemplar), 40. Synergids are, (a) haploid, (c) triploid, (b) diploid, (d) tetraploid, (a) Insects, (c) Wind, (AMU 2010), 32. The scutellum observed in a grain of wheat or, maize is comparable to which part of the seed in, other monocotyledons., 41. Residual persistent nucellus is known as, (a) perisperm, (c) integuments, (b) pericarp, (d) none of these, (b) Cotyledon, (d) Aleurone layer, (a) Plumule, (AMU 2010, 42. At the time of shedding, the number of nuclei, present in an angiosperm pollen grains is, (a) one, (c) Endosperm, (AIPMT 2010), 33. In unilocular ovary with a single ovule the, placentation is, (a) Axile, (b) one or two, (c) two or three, (d) only two, (b) Marginal, (d) Free central, (DUMET 2010), (c) Basal, 43. Which of the following wall layers of anther plays, a predominant role in its dehiscence ?, (a) Epidermis, (c) Middle layers, (AIPMT 2010), 34. Apomictic embryos in Citrus arise from, (a) diploid egg, (c) maternal sporophytic tissue, (d) antipodal cells, 35. Wind pollinated flowers are, (a) small producing nectar and dry pollen, (b) small brightly colored producing large number, of pollen grains, (c) small producing large no. of pollen grains, (d) large producing abundant nectar and pollen., (b) Endothecium, (d) Tapetum, (b) synergids, (AIPMT 2010), (DUMET 2010), 44. The egg apparatus of angiosperm comprises, (a) an egg cell and two antipodals, (b) an egg and two synergids, (c) an egg and two polar nuclei, (d) an egg and central cell, 45. Nucellar polyembryony is reported in species of, (DUMET 2010), (AIPMT 2010), (a) Citrus, 36. Transfer of pollen grains from anther to the, stigma of another flower on the same plant is, called, (b) Gossypium, (d) Brassica, (c) Triticum, (АIРMТ 2011), 46. Which one of the following pollinations, (a) autogamy, (b) xenogamy, (d) Karyogamy, (AIPMT 2010, DUMET 2010), autogamous ?, (a) geitonogamy, (c) chasmogamy, (c) geitonogamy, (b) xenogamy, (d) cleistogamy, 37. Exine in pollen grain is made up of, (a) Pectocellulose, (b) Lignocellulose, (d) pollen kit, 47. Wind pollination is common in, (AIPMT 2011), (c) sporopollenin, (a) legumes, (c) grasses, 29. (b) 30. (c) 31. (c) 32. (b) 33. (c) 34. (c), ANSWERS, (WB JEE 2010), (b) lilies, (d) orchids, 39. (d) 40. (a) 41. (a) 42. (c) 43. (b), (АIРМТ 2011), 35. (c), 44. (b) 45. (a), 36. (c) 37. (c) 38. (6), 46. (d), 47. (c)
Page 4 :
SEXUAL REPRODUCTION IN FLOWERING PLANTS, 1/81, Selaginella and Salvinia are considered to, represent a significant step toward evolution of, seed habit because, (a) female gametophyte is free and gets dispersed, like seeds, (b) female gametophyte lacks archegonia, (c) megaspores possess endosperm and embryo, surrounded by seed coat, (d) embryo develops in female gametophyte which, is retained on parent sporophyte, (d) Release of male gametes, (AIPMT Mains 2012), 56. Plants with ovaries having only one or a few, ovules, are generally pollinated by, (a) bees, le, (b) butterflies, (d) wind, (AIPMT Mains 2012), er, (c) birds, le, 57. How many plants in the list given below have, Re marginal placentation ?, Mustard, Gram, Tulip, Asparagus, Arhar, Sun, hamp, Chilli, Colchicum, Onion, Moong, Pea,, Tobacco, Lupin., (AIPMT Mains 2011), 49. In angiosperms, functional megaspore develops, (b) Five, nd go, (b) ovule, (a) Four, (rOS (c) Six, into, (d) Three, (AIPMT Mains 2012), (a) embryo sac, (c) endosperm, (d) pollen sac, 58. Advantage of cleistogamy is, (a) more vigorous offspring, (b) no dependence on pollinators, (c) vivipary, (AIPMT Mains 2011), 50. Both autogamy and geitonogamy are prevented, in, (а) Рарауa, (b) Cucumber, (NEET 2013), (d) Maize, (AIPMT Prelim 2012), (d) higher genetic variability, 59. Which one of the following statements is, (c) Castor, 51. An organic substance that can withstand, environmental extremes and cannot be degraded, by any enzyme is :, (a) Cuticle, correct ?, ei, (a) Sporogenous tissue is haploid., (b) Endothecium produces the microspores., (c) Tapetum nourishes the developing pollen., (d) Hard outer layer of pollen is called intine., (b) Sporopollenin, (d) Cellulose, (AIPMT Prelim 2012), 010 (c) Lignin, (NEET 2013), 60. Function of filiform apparatus is to :, (a) Recognize the suitable pollen at stigma, er0 (b) Simulate division of generative cell, S, 52. Even in absence of pollinating agents, seed, setting is assured in, (a) Commellina, (b) Zostera, (d) Fig, (AIPMT Prelim 2012), (c) Produce nectar, (d) Guide the entry of pollen tube (AIPMT 2014), 61. Male gametophyte with least number of cells is, present in :, (a) Pteris, (c) Salvia, 53. The innermost wall layer of microsporangium, nourshing the developing pollen grains is known, (b) Funaria, (d) Pinus, as, (10 (c) Lilium, Jon al ltate, 62. Geitonogamy involves, (a) endodermis, (b) endothecium, (AIPMT 2014), (d) sporogenous tissue, (AMU 2012), (c) tapetum, another flower of the same plant, (b) fertilization of a flower by the pollen from the, same flower, 54. Which one of the following statements is wrong ? (a) fertilization of a flower by the pollen from, (a) When pollen is shed at two-celled stage, double, fertilization does not take place, (b) Vegetative cell is larger than generative cell, (c) Pollen grains in some plants remain viable for, months, (c) fertilization of a flower by the pollen from a, flower of another plant in the same population, (d) fertilization of a flower by the pollen from a, flower of another plant belonging to a distant, population, (d) Intine is made up of cellulose and pectin., (AIPMT Mains 2012), (AIPMT 2014), 63. Male gametophyte in angiosperms produces :, (a) Three sperms, 55. What is the function of germ pore ?, (a) Emergence of radicle, (b) Absorption of water for seed germination, (c) Initiation of pollen tube, 48. (d), 57. (c), Ys (b) Two sperms and a vegetative cell, ANSWERS, 52. (a), 53. (c), 54. (a), 55. (c) 56. (d), 51. (b), 60. (d) 61. (c) 62. (a), 49. (a), 50. (a), 58. (b), 59. (c)
Page 5 :
71. Seed formation without fertilization in following, (XII), Pradeep's A TEXT BOOK OF BIOLOGY, SEXUA, 80. W, lif, 1/82, (c) Single sperm and a vegetative cell, (d) Single sperm and two vegetative cells, plants involves the process of, (b) Somatic hybridization, (d) Sporulation, (a) Budding, (AIPMT 2015), (NEET 2016), (c) Apomixis, 64. Coconut water from a tender coconut is :, (a) Degenerated nucellus, (b) Immature embryo, (c) Free nuclear endosperm, (d) Innermost layers of the seed coat, 72. Which one of the following statements is no, true ?, 81. V, (a) Exine of pollen grains is made up of, sporopollenin, (b) Pollen grains of many species cause severe, allergies, (e) Stored pollen in liquid nitrogen can be used in, the crop breeding programmes, (d) Tapetum helps in the dehiscence of anther, (AIPMT 2015), 82., 65. Filiform apparatus is characteristic feature of, (a) Synergids, (c) Nucellar embryo, (b) Generative cell, (d) Aleurone cell, (AIPMT 2015), (NEET 2016), 66. The wheat grain has an embryo with one large,, shield-shaped cotyledon known as :, (a) Coleoptile, (c) Coleorrhiza, 73. In majority of angiosperms, (a) egg has a filiform apparatus, (b) there are numerous antipodal cells, (c) reduction division occurs in the megaspore, mother cells, (b) Epiblast, (d) Scutellum, (AIPMT 2015), 67. Which one of the following fruits is, parthenocarpic?, I (d) a small central cell is present in the embryo sac, (NEET 2016), (b) Brinjal, (d) Jackfruit, (a) Banana, 74. Pollination in water hyacinth and water lily is, brought about by the agency of, (c) Apple, (AIPMT 2015), 68. In angiosperms, microsporogenesis and, megasporogenesis :, G1 (a) Ocur in ovule, (b) Occur in anther, (a) water, (b) insects or wind, (d) bats, (NEET 2016), (c) Form gametes without furthers divisions, (d) Involve meiosis, 69. The coconut water from tender coconut, represents :, (a) Fleshy mesocarp, (b) Free nuclear proembryo, (c) Free nuclear endosperm, (d) Endocarp, 70. Which of the following statements is not, (c) birds, 75. The ovule of an angiosperm is technically, equivalent to, (a) megasporangium, (c) megaspore mother cell, (d) megaspore, 76. Functional megaspore in an angiosperm, develops into an, (a) endosperm, (c) embryo, 77. Attractants and rewards are required for, (a) entomophily, (c) cleistogamy, (b) megasporophyll, (AIPMT 2015), (NEET 2016), (b) embryo sac, (d) ovule, (NEET 2017), (NEET 2016), (b) hydrophily, (d) anemophily, correct ?, l (a) Insects that consume pollen or nectar without, bringing about pollination are called pollen/, (NEET 2017), d nectar robbers., (b) Pollen germination and pollen tube growth are, regulated by chemical components of pollen, interacting with those of the pistil, (c) Some reptiles have also been reported as, pollinators in some plant species, (d) Pollen grains of many species can germinate on, the stigma of a flower, but only one pollen tube, of the same species grows into the style, 78. Flowers which have single ovule in the ovary and, are packed into inflorescence are usually, pollinated by, (a) bee, (c) bat, 79. A dioecious flowering plant prevents both, (a) autogamy and geitonogamy, (b) geitonogamy and xenogamy, (c) cleistogamy and xenogamy, (d) autogamy and xenogamy, (b) wind, (d) water, (NEET 2017), ANSWERS, (NEET 2016), 63. (b) 64. (c) 65. (a) 66. (d) 67. (a) 68. (d), (NEET 2017), 70. (d) 71. (c) 72. (d) 73. (c) 74. (b) 75. (a) 76. (b) 77. (a) 78. (b) 79. (4), 69. (c)
