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Question

Pharyngeal gill slits are dorsal in

A
Cephalochordates
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B
Urochordates
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C
Hemichordates
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D
Euchordates
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Solution

The correct option is A Hemichordates
C. Hemichordates
EXPLANATION: Pharyngeal gill slits are dorsal in non-vertebrates and hemichordates. These are repeated openings that appear along the pharynx caudal to the mouth. Pharyngeal gill slits are used for the movement of water in the mouth.

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