Silica for the formation of siliceous spicules in sponges is:

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Biology · Invertebrate Zoology

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Extracted from sea water

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Answer 1

Absorbed from the organic substrate

Answer 2

Extracted from sea water

Answer 3

Provided by the symbiotic algae

Answer 4

Synthesized endogenously by the sponge

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