Which one of the following animals possesses | vedclass

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(A) $Hydra$ belongs to the phylum $Cnidaria$ (or $Coelenterata$).In $Hydra$,the nervous system consists of a network of nerve cells (neurons) distribu

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Hydra

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(A) $Hydra$ belongs to the phylum $Cnidaria$ (or $Coelenterata$).In $Hydra$,the nervous system consists of a network of nerve cells (neurons) distributed throughout the body,but these cells are not organized into distinct nerves or a central nervous system.This is known as a diffuse or nerve net type of nervous system.In contrast,organisms like $Tapeworms$,$Earthworms$,and $Frog's$ $tadpoles$ possess more complex nervous systems that include organized nerves and ganglia.

Which one of the following animals possesses nerve cells but no nerves?

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