Echinodermata

The name echinoderm literally means "spiny skin." Echinoderms are characterized by their pentaradial symmetry, internal skeletons,...

Echinoderms have radial symmetry, which means they are divided into 5 equal sections, radiating from a central point. In each segment, there...

Nearly all echinoderms release their solid wastes through the anus. It will then be released in the form of feces, except with the organism ...

All echinoderms are capable of sexual and asexual reproduction. Most are ethier male or female, but in some cases could be hermaphodites. Fe...

Echinoderms have a very uncomplicated nervous system. Most species have a nerve ring that surrounds the mouth with radial nerves that connec...

The task of internal transport relys on many different systems in the echinoderms. Gas exchange (respiration) and the elimination of wastes ...

Echinoderms, not unlike many other animals, have to exchange carbon dioxide for oxygen. In most echinoderms the outer tissue of the tube fee...