Question

Perostomium explain to Short form​

Answer 1

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The peristomium is the first true body segment in an annelid worm's body in the anterior end. It is directly behind the prostomium and contains the mouth, tentacular cirri, and sometimes feeding palps, which may instead occur on the prostomium.

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Answer 2

Answer:

The peristomium has no setae, and the setae generally are hair-like or uncinate, often forming almost complete rings.

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