Q37 of 525 Page 259

Write down four general characters of phylum Echinodermata. Give two examples.

Characters of Phylum Echinodermata:

(i) These are exclusively free-living marine animals.


(ii) They are triploblastic and coelomate animals.


(iii) They also have a peculiar water-driven tube system that they use for moving around.


(iv) They have hard calcium carbonate structures that they use as a skeleton.


Examples- starfish and sea urchins


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Name the phylum in which ambulacral system is present. What is its function?