Which one of the following animals possesses nerve cells but no nerves?
Which one of the following animals possesses nerve cells but no nerves?
(a) Hydra
(b) Tapeworm
(c) Earthworm
(d) Frog s tadpole
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Correct option (a) Hydra
Explanation:
Hydra has nerve cells but no nerves. Hydra possesses a very primitive nervous system consisting of a synaptic network of bipolar and multipolar nerve cells.
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