Question

Water vascular system in echinoderm is a portion of- alimentary canal

Answer 1

Water Vascular System. Echinoderms possess a unique ambulacral or water vascular system, consisting of a central ring canal and radial canals that extend along each arm. ... Water enters the madreporite on the aboral side of the echinoderm. From there, it passes into the stone canal, which moves water into the ring canal.