Question

why digestion in planaria is intracellular as well as extracellular

Answer 1

Because planarian has sac like digestive system and has single opening for intaking and excretion of food and waste...

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Answer 2

Answer:

Digestion in Planaria is both extra cellular as well as intra cellular.

Explanation:

Planaria has an incomplete digestive system.

This digestive system consists of mouth , larynx and gastro vascular cavity.

This incomplete digestive system is the reason for both extra cellular and intracellular digestion.

Mouth helps in extra cellular digestion in Planaria by releasing enzymes.

When food enters the gastro vascular cavity the intra cellular digestion occurs.