Do Echinoderms Have A Five Part Body?
Do Echinoderms Have A Five Part Body? Do echinoderms have a five part body? Although all living echinoderms have a pentamerous (five-part) radial symmetry, an internal skeleton, and a water-vascular system derived from the coelom (central cavity), their general appearance ranges from that of the stemmed, flowerlike sea lilies, to the wormlike, burrowing sea cucumbers,