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Q.

In majority of angiosperms

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a

Agent of pollination is water

b

Pollen grains are shed at 2 celled stage

c

Development of embryo sac is bisporic

d

Reductional division occur in microspores

answer is B.

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Detailed Solution

Insects (biotic agents) are the most common agents of pollination in angiosperms.

60% angiosperms shed their pollen grains at 2-celled stage containing vegetative cell and generative cells. 

In majority of angiosperms, development of embryo sac in monosporic.

Microspore mother cell (2c) undergoes reductional division to form four haploid microspores.

 

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In majority of angiosperms