NEET BIOLOGY

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: -Pollination is simply the transfer of pollen grains from an anther to a stigma. Fertilization occurs much later when the pollen grains germinate on the stigma and send down a pollen tube which releases the sex cells to fertilize the ovules.

Detailed explanation-3: -The transfer of pollen grains from the anther to stigma of a flower is called pollination.

Detailed explanation-4: -In all wind-pollinated flowers, the mature stigma is found rough and sticky.

Detailed explanation-5: -The top part of the pistil is called the stigma and is sticky so it will trap and hold pollen. In flowering plants, the flower functions in sexual reproduction. The essential flower parts are the male parts called the stamens and the female part called the pistil.