Question

Mention two important basis on which animals are put into different categories

Answer 1

The two things that distinguish the animals is :-

1. Animals having notochord or the animals having vertebral columns.
2. The animal do work on the basis of division of labour or not .

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Answer 2

☆$\red {HELLO\:DEAR}$☆

Plants and animals differ in many features such as the absence of chloroplasts, presence of cell wall, etc. But, locomotion is considered as the characteristic feature that separates animals from plants.

This is because the absence of locomotion in plants gave rise to many structural changes such as the presence of a cell wall (for protection), the presence of chloroplasts (for photosynthesis) etc.

Hence, locomotion is considered to be the basic characteristic as further differences arose because of this characteristic feature.

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