HORTICULTURE

Detailed explanation-1: -When the pollen grain lands on the stigma, chemical communication occurs between the pollen grain and the pistil, helping the pistil recognize the right type of pollen. After acceptance, pollen begins to germinate and the pollen tube develops towards the ovary carrying the male gamete.

Detailed explanation-2: -Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.

Detailed explanation-3: -When the pollen is transferred from the anther of a flower to the stigma of the same flower or to the stigma of another flower of the same plant, it is called self pollination. Self pollination is also called autogamy.