Cross pollination in true genetic sense is 

(1) allogamy

(2) cleistogamy

(3) geitonogamy

(4) autogamy

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Seed of castor is

(1) non-endospermic, exalbuminous

(2) endospermic albuminous

(3) endospermic exalbuminous

(4) non-endospermic albuminous.

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Ubisch bodies are secreted from

(1) ovule

(2) tapetum

(3) both of these

(4) none of these

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Aleurone layer is

(1) haploid

(2) diploid

(3) triploid

(4) tetraploid

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Edible part of apple is the

(1) thalamus

(2) mesocarp

(3) epicarp

(4) endocarp

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Pollination by bat is called

(1) ornithophily

(2) chitopteriphily

(3) malacophily

(4) anemophily

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During formation of which of the following free nuclear division occurs?

(1) Flower

(2) Endosperm

(3) Gametes

(4) Fruit

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Xenia and metaxenia terms are related with

(1) pollen culture

(2) xylem and phloem

(3) endosperm

(4) embryo

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Pollen grains are able to withstand extremes of temperature and dessication because their exine is composed of

(1) cutin

(2) suberin

(3) sporopollenin

(4) callose

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The pollen tube usually enters the embryo sac

(1) through one of the synergids

(2) by directly penetrating the egg

(3) between one synergid and central cell

(4) by knocking off the antipodal cells

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