Exchange of genetic material takes place in

The pistil is intact. Cross-pollination has occurred,leading to fertilization and the formation of fruit. In a bisexual flower,despite the young stamens being removed artificially,the flower produces fruit. Provide a suitable explanation for the above situation.

Where are the female germ cells located in a flower?

What is the reason for the growth of the pollen tube towards the ovule?

Where is the zygote located in the flower after fertilization?

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