First slide
Classification of Animals
Question

Digestion is exclusively intracellular in

Easy
Solution

Digestion is exclusively intracellular in protozoans (e.g., Amoeba) and sponges (e.g., Spongilla). Both intracellular and extracellular digestion occurs in cnidarians (e.g., Physalia) and mammals (e.g., Macaca). Digestion in annelids (e.g., Nereis) is extracellular.

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