How are echinoderms unique with regard to their symmetry? List the any three others features of phylum
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echinoderms are spiny skinned animals which are radially symmetrical.
echinoderms are mostly marine
the exoskeleton is make of calcium carbonate (CaCo3)
they are triploblastic in nature.that is they have mesoderm ,endoderm , ectoderm.
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