Which one of the following statements about a | vedclass

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(C) $Spongilla$ is a common,widely distributed fresh water sponge belonging to the phylum $Porifera$.$Spongilla$ possesses special flagellated cells k

Vedclass · Accepted Answer

$Spongilla$ has special collared cells called choanocytes,not found in the remaining three.

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(C) $Spongilla$ is a common,widely distributed fresh water sponge belonging to the phylum $Porifera$.$Spongilla$ possesses special flagellated cells known as choanocytes (collar cells) which line the spongocoel and the canals.These cells are characteristic of sponges and are not found in the leech (annelid),dolphin (mammal),or penguin (bird).

Which one of the following statements about all the four of $Spongilla$,leech,dolphin and penguin is correct?

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