Question

protozoans found in the intestine of vertebrates and invertebrates


Science: microorganisms friendly and foe

Class 8​

Answer 1

Answer:

A considerable number of protozoans became parasitic, a mode of life that evolved independently among the protozoans many times. Ciliates and amoebae became symbionts in the intestinal tracts of both vertebrates and invertebrates as a result of surviving the digestive enzymes of the predator.

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