Which of the following gives the most appropriate meaning of choanocytes?
A
Reproductive cells
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B
Nutritive cells
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C
Spicule forming cells
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D
Excretory cells
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Solution
The correct option is B Nutritive cells Choanocytes are also called the collar cells. These cells line the interior of the body of sponges that contain a central flagellum. Sponges feed on minute organisms and small organic particles which enters the body through water current and are ingested by the choanocytes. As they help in nutrition, they can be called the nutritive cells. Thus, the correct answer is option B.