Question

why is Protozoa called early animals

Answer 1

Because they exhibit cellular level of organisation.

Answer 2

Hey mate here is your answer

Protozoans are regarded as early or primitive animals because they exhibit a cellular level of organization, they live as parasites and move with the help of flagella or cilia, and they are microscopic and exhibit a primitive mode of reproduction (fission, budding or conjugation).

Or

They are called early animals because they were primitive in nature ith a simple body structure. They are prokaryotic unicelluar organisms .

Hope this answer will help you!!

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