Question

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Answer 1

(b) The germination of pollen grain takes place on stigma if it falls on stigma of plant of same species. the pollen grain falling on stigma is stimulated to germinate due to the secretion of sugars by the stigma.
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Answer 2

P​ollination is the process of combining pollen from male flowers with female flowers to form seeds and set fruit.When the pollen grain is deposited on the stigma it starts to germinate and the pollen tube grows up through the pistil of the female flower until it reaches the ovary and fertilisation occurs. after the pollen lands on suitable stigma, it has to reach the female germ cells which are in ovary. for this, a tube grows out of pollen grains and travel through style to reach the ovary.

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