Question

with which substance the body of phylum_Echinodermata's animals covered ​

Answer 1

It is covered with spicules of calcium carbonate, and that is why they are called echinoderms.

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Answer 2

Hi

It is Covered with Hard covering of Calcium Carbonate and They are Exclusively Marine animals

And That's Why they called Echinos

Thanks

Jay Hind

Vande mataram