Neural Control and Coordination Question 28
28. In which animal nerve cell is present but brain is absent?
[2002]
(a) Sponge
(b) Earthworm
(c) Cockroach
(d) Hydra
Show Answer
Answer : d
Hints & Solutions
(d) A primitive type of nervous system, without brain is found in the form of intra epidermal nerve net. However, there is no brain in Hydra to coordinate the response.
