Question

Which is characteristic feature of Echinodermata?

• A. Vascular system
• B. Radial symmetry
• C. Radial canal
• D. Ambulacral system

Answer 1

The correct option is D Ambulacral system

A) Vascular systems of different kind are present in Echinoderms and higher chordates and plants as well.

B) Radial symmetry is shown by Cnidarians and Echinoderms along with some sponges.

C) Radial canals are present in Poriferans as well.

D) Ambulacral system is present exclusively in Echinoderms.

So the correct answer is 'Ambulacral system'.