Sagot :
Answer:
Characteristics of Echinodermata
.They have a star-like appearance and are spherical or elongated.
.They are exclusively marine animals.
.The organisms are spiny-skinned.
.They exhibit organ level of organization.
.They are triploblastic and have a coelomic cavity.
.The skeleton is made up of calcium carbonate.
Explanation:
★ANSWER★
»»Summary:
1.)Echinoderms show radial symmetry and have an endoskeleton and a unique water vascular system. Some have spines.
2.)Echinoderms generally reproduce by external fertilization; regeneration is fairly common among echinoderms.
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