Choanocytes perform

Secretion of spicules

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Excretion

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Reproduction

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None of the above

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Solution

The correct option is A Excretion
Choanocytes or collar cells are characteristic of sponges. These cells line the spongocoel and the canals of water canal system. Digestion in sponges is intracellular and occurs within the choanocytes. It also helps in the elimination of waste. So, the correct answer is option B.

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