Water vascular system is the characteristic of which group of the following: (a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata

(c) Echinodermata. The water vascular system is a characteristic feature of echinoderms such as starfish and sea urchins; it consists of a network of fluid-filled canals used for locomotion, food capture, respiration, and excretion.