When the ovary of a flower changes into a fruit, what happens to the ovules?
(a) What is meant by 'unisexual flowers' and 'bisexual flowers' ? Give two examples of each. (b) What is pollination? How does pollination occur? (c) Describe the process of fertilisation in a flower with the help of labelled diagrams. (d) What changes take place in the flower after fertilisation which leads to the formation of seeds and fruit?