Question

Which organisms are called primitive and how are they different from the so-called – advanced organisms?​

Answer 1

Answer:

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Which organisms are called primitive and how are they different from the so-called – advanced organisms?

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: Organisms with simple cellular structure and no division of labour are called

primitive.

Advanced organisms, like mammals have millions of cells and there are different organs and organ system for different biological functions.

Answer 2

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Organisms with simple cellular structure and no division of labour are called primitive.

Advanced organisms, like mammals have millions of cells and there are different organs and organ system for different biological functions.