Which characteristics of the skeleton of members of phylum echinodermata is unique compared to the typical skeletons of members of clade protostomia? echinoderms have a hard, calcareous skeleton. echinoderms have an internal skeleton. the skeleton of echinoderms provides body rigidity. the skeleton of echinoderms is not molted?

Below are the characteristic of Echinoderms:

E chinoderms have a hard, calcareous skeleton.

T he skeleton of echinoderms is not molted

The qualities of grown-up echinoderms are the owner of a water vascular framework with outside tube feet and a calcareous endoskeleton comprising of ossicles associated by a work of collagen strands.