Question

Size of egg in the animal varies.The egg may be very small as in humans, much

larger as in hens. Give reason.​

Answer 1

These processes are essential for the survival of every individual. You have also learnt about the process of reproduction in plants. Reproduction is essential for the continuation of a species. Imagine what would have happened if organisms had not reproduced. You will realise that reproduction is very important as it ensures the continuation of similar kinds of individuals, generation after generation.

You have already learnt in your previous class about reproduction in plants. In this chapter, we shall learn how reproduction takes place in animals.

Sl.no Animal young one Answer

1 Human baby It's an example

2 cat

3 dog

4 butterfly

5 Hen chick It's an example

6 cow

7 frog

Just as in plants, there are two modes by which animals reproduce. These are:

(i) Sexual reproduction

(ii) Asexual reproduction.

Sexual Reproduction

You will remember that plants that reproduce sexually have male and female reproductive parts. Can you name these parts? In animals also, males and females have different reproductive parts or organs. Like plants, the reproductive parts in animals also produce gametes that fuse to form a zygote. It is the zygote which develops into a new individual. This type of reproduction beginning from the fusion of male and female gametes is called sexual reproduction. Let us find out the reproductive parts in humans and study the process of reproduction in them.

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