Name the tissue through which the foetus gets all the requirements from the mother's body.

Write the names of (a) male sex hormone, and (b) female sex hormones.

What name is given to the fusion of sperm and ovum?

Draw a neat sketch of the stamen of a flower. Mark in it filament and anther.

Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.