Describe the process of fertilisation in human beings.

Internal fertilisation occurs

1. in female body.
2. outside female body.
3. in male body.
4. outside male body.

A tadpole develops into an adult frog by the process of

1. fertilisation
2. metamorphosis
3. embedding
4. budding

The number of nuclei present in a zygote is

1. none
2. one
3. two
4. four