Q. 214.0( 5 Votes )

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Answer :

Pollination: It is a type of asexual reproduction in which the pollen grains are transferred from the anther of a stamen to stigma of a carpel. Pollination is of two types:

(a) Self-pollination: Self-pollination is the process of transfer of pollen grain from anther of a flower to the stigma of same flower or another flower of the same plant.

(b) Cross-pollination: It is defined as the process of transfer of pollen grains from the anther of a flower to the stigma of flower belonging to other similar plant.

Stigma receives the pollen grains from anther of stamen during the process of pollination. When a pollen falls on Stigma, it bursts open and grows a pollen tube downward through style towards female gamete in ovary. A male gamete moves down the pollen tube. The female gamete also known as Ovum combines with the male gamete to form zygote.

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