Water vascular system and tubular feet are seen in phylum _____.

Paired and jointed legs are seen in phylum _______.

What is water vascular system?

X is an Echinoderm showing radial symmetry with water vascular system and tube feet. (a) An arm of X is damaged in an accident and later it was grown and regained its original form (a) Name the Echinoderm - X. (b) What is the biological phenomenon that led to the regain of lost arm?

Name the larval stages seen in Phylum Porifera.

Water vascular system is a characteristic of …………………. .

Presence of water vascular system is the most distinctive feature of the Phylum:

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

The blood vascular system, of rabbit is :