In Hydra, waste material of food digestion and nitrogenous waste material removed from __ and _ respectively.

Mouth and mouth

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Body wall and body wall

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Mouth and body wall

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Mouth and tentacles

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Solution

The correct option is C Mouth and body wall
In Hydra, undigested residues are egested from coelenteron through the mouth, while nitrogenous excretory product (ammonia) is removed from the general body surface. Hydra is solitary sessile fresh water coelenterates. They are found in lakes, pond, and stream. Hydra is an ammonotelic animal, ie, it excretes waste material in the form of ammonia.

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