Ubisch bodies are secreted from

(1) ovule

(2) tapetum

(3) both of these

(4) none of these

Concept Questions :-

Stamen: Anther
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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

Concept Questions :-

Pollination & Outbreeding Devices
Post Pollination Events
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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

Concept Questions :-

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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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Double fertilization involves

(1) fertilization of the egg by two male gametes

(2) fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube

(3) fertilization of the egg and the central cell by two sperms brought by different pollen tubes

(4) fertilization of the egg and the central cell by two sperms brought by the same pollen tube.

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Plants of which one of the following groups of genera are pollinated by the same agency?

(1) Triticum, Cocos, Mangifera

(2) Ficus, Kigelia, Casuarina

(3) Salvia, Morus, Euphorbia

(4) Bombax, Butea, Bauhinia

Concept Questions :-

Pollination & Outbreeding Devices
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