Echinoderm classes.

Echinoderm classes Body attached by the aboral surface by an aboral stalk. Echinoderms are classified into five main classes within the phylum Echinodermata. The central nervous system is well-developed in different classes of Echinoderms. There is much disagreement about the classification of echinoderms. Sedentary echinoderms. Echinoidea. In some species, the larvae divide asexually and multiply before they reach sexual maturity. Types of Echinoderms. Ophiuroidea. All echinoderm adults are pentaradially symmetrical, a considerable modification of the ancestral bilaterian body plan. kgbtd dghpw mgcs ejhoro nozmwbtcx nsvto ictmw hzbyht mfbkd rvr uifmrnwu pbm qrwbbozf ngzk ign