Question

Distinguish between pollination and fertilization. Mention the site and product of fertilisation in a flower. Draw a neat, labeled diagram of a pistil showing pollen tube growth and its entry into the ovule.

Answer 1

Pollination	Fertilization
It is the transfer of pollen grains from the anther to the stigma of a flower.	It is the fusion of male gamete with female gamete
Achieved by agents like a wind, water or animals.	Achieved by the growth of pollen tube so that the mail gamete reaches the female germ cells.
Leads to fertilization	Lead to formation of seeds
Pollination is an external process	Occurs in the ovary of female.

Ovary is the site of fertilization and pollination occurs externally.