What is ovum or egg?

Arrange the formation of the following cells in the ovary in the sequential order:
i) Ovum
ii) Primary follicle
iii) Primary oocytes
iv) Graafian follicle

The reproductive parts produce reproductive cells called as?

Match the following:

Complete the crossword puzzle:

Across
1. The process of the fusion of the gametes.
6. The type of fertilisation in hen.
7. The term used for bulges observed on the sides of the body of Hydra.
8. Eggs are produced here.

Down
2. Sperms are produced in these male reproductive organs.
3. Another term for in vitro fertilisation.
4. These animals lay eggs.
5. A type of fission in Amoeba.
 

Write two examples for the following.

Types of fertilization