The distinct anus is absent in echinoderms ______________.

Asteroidea

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Ophiuroidea

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Echinoidea

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Holothuroidea

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Solution

The correct option is C Ophiuroidea
Brittle stars have a blind gut with no intestine or anus. The mouth serves both the functions of ingestion and egestion.
So, the correct option is B.

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The distinct anus is absent in echinoderms ______________.

The correct option is C OphiuroideaBrittle stars have a blind gut with no intestine or anus. The mouth serves both the functions of ingestion and egestion.So, the correct option is B.

The correct option is C Ophiuroidea
Brittle stars have a blind gut with no intestine or anus. The mouth serves both the functions of ingestion and egestion.
So, the correct option is B.