Neural Control and CoordinationMedium
Question
In which animal nerve cell is present but brain is absent ?
Options
A.Sponge
B.Earthworm
C.Cockroach
D.Hydra
Solution
The neurons of Hydra synapse with each other and other body cells. As a result, it responds to external stimuli. However, there is no brain in Hydra to coordinate the responses.
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