What is the kind of digestive system of echinoderms, Biology

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Q What is the kind of digestive system of echinoderms?

Echinoderms present a complete digestive system with anus and mouth.

Q. Do sea urchins have teeth?

Sea urchins have a teeth-like structure juxtaposed to the mouth and made of five teeth connected to muscle fibers and ossicles. This structure, called as Aristotle's lantern, is use to scratch food, mostly algae, from marine rocks.


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