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Question

Faecal matter from coelenteron of Hydra is expelled out from

A
Hypostome
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B
Buds
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C
General body surface
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D
Tentacles
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Solution

The correct option is A Hypostome
The polyps of the Hydrozoa are specialized for feeding. They have a hypostome, surrounded by a number of tentacles. In Hydra, cells release waste products into the coelenteron from which it goes out through the hypostomal opening.
Therefore, the correct answer is option A.

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