Exemplar Problems
Question:
Water vascular system is the characteristic of which group of the following: (a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata
Answer:
Ans. The water vascular system is the characteristic of the group (c) Echinodermata. This unique system is used for locomotion, feeding, and gas exchange in echinoderms like starfish, sea urchins, and sea cucumbers





