A) Molluscs
B) Arthropods
C) Both (a) and (b)
D) Echinoderms
Correct Answer: D
Solution :
Cephalization is a process of Brain formation. In echinodermata brain is absent, nervous system is consist only nerve ring and radial nerve cords.
You need to login to perform this action.
You will be redirected in
3 sec
