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The mouth of which of the following organism has a unique feature of wheel organ the which is a set of ridges that surrounds the oral cavity?

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Unio sp.

Herdmania sp.

Amphioxus sp.

Balanoglossus sp.

answer is C.

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Detailed Solution

The mouth of Amphioxus sp. has a unique feature of wheel organ which is a set of ridges that surrounds the oral cavity.

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