Scleroblasts in sponges are responsible for

Food reserve

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Skeleton

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Water current

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Excretion

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Solution

The correct option is B Skeleton
The major part of the skeletal system in sponge is spicules, which are secreted by special mesenchymal cells, called as scleroblasts. They are in shape of spines. Spicules may be calcareous or siliceous.
Hence the correct option is B.

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