Echinoderms have a(n) A. segmented body. B. cephalothorax. C. exoskeleton. D. endoskeleton.

Biology · High School · Wed Jan 13 2021

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Here, option (D) is correct.

Echinoderms have an endoskeleton. The endoskeleton of echinoderms is made of plates called ossicles. Ossicles are formed from networks of calcium carbonate crystals known as the stereom.

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