Question

Pick the incorrect statement regarding echinoderms :

I. Body is covered with spicules made of bio-mineral matrix.

II. Adults show pentaradial Symmetry while larvae show bilateral symmetry.

III. Water vascular system is well developed and aids in locomotion and feeding.

IV. Classification of echinoderms is based on merosity of organs.

• A. I
• B. II
• C. III
• D. IV

Answer 1

The correct option is D

IV

The classification of echinodermata is done on their body shape like star shaped (e.g.,Starfish), disc shaped (e.g., sea urchins) and cucumber shaped (e.g., sea cucumbers) but not merosity of organs.