Which animal possesses neurons but lacks a br | vedclass

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(D) The $Hydra$ belongs to the phylum $Cnidaria$. It possesses a primitive nervous system consisting of a network of neurons (nerve net) spread throug

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Hydra

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(D) The $Hydra$ belongs to the phylum $Cnidaria$. It possesses a primitive nervous system consisting of a network of neurons (nerve net) spread throughout its body. However,it lacks a centralized nervous system or a brain to process information. In contrast,sponges $(Porifera)$ lack neurons entirely,while earthworms and cockroaches possess a centralized nervous system with a brain or cerebral ganglia.

Which animal possesses neurons but lacks a brain?

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