Question
Biology Question on Classification Of Animals
Primitive nervous system is formed in
A
sponge
B
cnidaria (coelenterata)
C
echinodermata
D
annelida
Answer
cnidaria (coelenterata)
Explanation
Solution
The nervous system of coelenterates (sponges) is primitive, as it consists of a diffuse nerve net. Central nervous system is absent in coelenterates.