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—_ ;, |, Which one of the following character causes cross, pollination?, , (a) Cleistogamy (b) Dichogamy, (c) Homogamy (d) All of these, , 2. Inwhich characters air pollinated flowers differ from insect, pollinated ones?, , (a) Due to small perianth and sticky pollen., , (b) Small coloured perianth and heavy pollen grains., (c) Coloured perianth and large pollen grains., , (d) Without perianth and light pollen grains., , Scanned with CamScanner

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Dichogamy which helps in cross pollination is a floral, mechanism in which, , (a) pollen sac and stigma are at different heights., (b) anther and stigma mature at different times., , (c) structure of pollen sac and stigma functions as, hurdles,, , (d)_ pollen grain is unable to germinate on the stigma of, the same flower,, , Correct definition of pollination, , ‘4 sim, (a) transfer of pollen we from ar os, , ofa, , Ge, (b) germination of pollen grain, h ., (c) growth of pollen tube in in s var, (d) visits of insects in flower, ft oe, Self pollination means a l 4, (a) occurrence of male and female sex/organsin, flower. é, (b) germination of pollens within the anther “Fy, , a, , (c) transference of pollens from anther to the sir, the same flower., , (d) transference of pollens from one flower to another on, the same plant., , Part of the gynoecium which receives the pollen is called, , , , (a) ovary, (b) ovule, (c) style, , (d) stigma, , Scanned with CamScanner

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a = "aU, 9. Pollination characteristically occurs in, , (a) angiosperms and fungi., (b) angiosperms and gymnosperms., (c) pteridophytes and angiosperms., (d) bryophytes and angiosperms., , 10. Syngamy means, (a) fusion of similar spores., , “ (b), fusion of dissimilar spores., , 4 (©). fusion of cytoplasm., (d) fusion of gametes., , ‘UL. Which one of the following is an example of cleistogamy?, , (a). pm (b) Vallisneria, aS Commelin = (d) Calotropis, , 12. Number of nuclei taking part in double fertilization is, , omy (6) 3, () Y ew | da) 5, 13. The process ‘of: fusion “between male nucleus and egg, Rucleas i is called, “ey ssyngamny (b) triple fusion, , (c) double fertilization (d) conjugation, 14. In cau driple fusion is necessary for the formation, , of, (a) seed coat (b) fruit wall, (c) embryo (d) endosperm, , Scanned with CamScanner

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15, 16., , 17., , 18., , 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 the central cell by ee, , sperms brought by the same, In angiosperms, free nuclear « diy, (a) gamete formation, (b) embryo formation :, , (c) endosperm f i, (d) flower formation Tae, , Milky water of green coconut is, , , , , , , 42, , @<~, (b) liquid of female gametophyte %1, *, <, (c) liquid endosperm ony, (d) liquid embryo, , Dicot embryo consists of, , (a) radicle and oon, , (b) radicle, plumule, cotyledons and sometimes, , endosperm., (c) radicle, plumule, cotyledons and tegmen., (d) radicle, plumule, cotyledons, tegmen and testa., , (a) liquid nucellus, , Xx, , Scanned with CamScanner