Question

Which organisms is called as primitive animals?

Answer 1

The organisms which have ancient body designs that have not changed much are called primitive organisms or lower organisms. These are simple life forms. On the other hand, the organisms that have acquired their particular body designs relatively recently, they are called advanced organisms or higher organisms.

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Answer 2

Answer:

Organisms with simple cellular stracture and no division of labour are called primitive. Advanced organisms, like mammals have millions of cells and there are system for different biological functions.

Explanation:

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