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Question

Mouth of Herdmania is

A
Atrial aperture
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B
Excurrent aperture
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C
Branchial aperture
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D
Both A and B
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Solution

The correct option is C Branchial aperture
Herdmania shows two projections on the free side of the body, The branchial siphon and the atrial siphon. The branchial siphon has an aperture which is forms the mouth and hence is also called 'branchial aperture' which forms the anterior end of the body.
So, the correct answer is 'Branchial aperture'.

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