Q7 of 20 Page 67

State the reason why most of the terrestrial animals’ fertilisation takes place internally.

The environment on terrestrial land keeps on changing than that of the marine environment. So inorder to increase the survival chance of the fertilization (internal environment is nearly constant) terrestrial animals’ fertilization takes place internally.


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5

How can you identify the animal is viviparous or oviparous.

 6

Who am I?

a) I am formed by the fusion of male and female gametes...


b) I am a gamete that has a tail and travel to fuse with female gamete...


c) I am a fully developed embryo inside a mother’s body...

 8

Observe the following figures and write the functions of them.

 9

By taking help of the given words label the following life cycle?

(eggs, adult, pupa, larva)