NEET BIOLOGY

Detailed explanation-1: -The pollen grain travels along the pollen tube and fertilizes the nucleus in the ovule. The fertilized ovule develops into a seed. The plant embryo is contained in the seed, which carries genetic material from both parents. The ovary gives rise to the fruit.

Detailed explanation-2: -After pollination, these gametes move to the ovule, where they combine with female gametes, which also contain half the quota of chromosomes. This process is called fertilisation. After fertilisation, the combined cell grows into an embryo inside a seed.

Detailed explanation-3: -Pollination is an essential part of plant reproduction. Pollen from a flower’s anthers (the male part of the plant) rubs or drops onto a pollinator. The pollinator then take this pollen to another flower, where the pollen sticks to the stigma (the female part). The fertilized flower later yields fruit and seeds.

Detailed explanation-4: -Step one: After pollen has landed on the stigma, it grows a pollen tube down through the style to the ovary. Step two: The nucleus of the pollen grain travels down the pollen tube and fertilises the nucleus in the ovule. Step three: The fertilised ovule develops into a seed.

Detailed explanation-5: -When pollen lands on the flower’s stigma, it germinates and forms a pollen tube, which then quickly grows towards the plant’s ovary. Once it finds an ovule, the pollen tube bursts to release sperm cells, which fertilize the ovule and initiate seed formation.