BOTANY

Detailed explanation-1: -During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary. Male reproductive cells travel down the tube and join with the ovule, fertilizing it. The fertilized ovule becomes the seed, and the ovary becomes the fruit.

Detailed explanation-2: -angiosperm fertilization The pollen tube ultimately enters an ovule through the micropyle and penetrates one of the sterile cells on either side of the egg (synergids). These synergids begin to degenerate immediately after pollination.

Detailed explanation-3: -During pollen tube growth, sperm cells move within the pollen tube, and once the pollen tube reaches the female gametophyte, the two sperms will be released and fuse with the egg cell and the central cell, respectively, for double fertilization.

Detailed explanation-4: -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. After fertilization, the ovules become the seeds, and the ovary wall becomes the fruit.