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Question

Collar cells of sponges are known as

A
Pinacocytes
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B
Choanocytes
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C
Scleroblasts
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D
Myocytes
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Solution

The correct option is D Choanocytes
Choanocytes are also called as the collar cells. These cells line the interior of the body of sponges. Sponges feed on minute organisms and small organic particles, which enter the body through water current and are ingested by the choanocytes.
So, the correct answer is option B.

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