What are the salient features of echinoids ?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

* This class includes sea urchins, heart urchins, sand dollars etc. Body is ovoid or discoid and covered with movable spines
* Arms are absent. * Tubefeet bear suckers.
* Calcarious ossicles of body unite to form a rigid test or corona or case.
* Five jawed Aristotle’s lantern is present.
* Ambulacral grooves are closed.
* Pedicellaria are three jawed.
Eg: Echinus (Sea Urchin)
Echinocardium (heart urchin)

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th