In earthworms,the circumpharyngeal connective | vedclass

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Question

(B) In the earthworm ($Pheretima$ $posthuma$),the nervous system consists of a pair of cerebral ganglia located above the pharynx in the third segment

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cerebral ganglia with the subpharyngeal ganglia

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(B) In the earthworm ($Pheretima$ $posthuma$),the nervous system consists of a pair of cerebral ganglia located above the pharynx in the third segment. These are connected to the subpharyngeal ganglia located below the pharynx in the fourth segment by a pair of circumpharyngeal connectives. Thus,the circumpharyngeal connectives serve as a bridge between the cerebral ganglia and the subpharyngeal ganglia.

In earthworms,the circumpharyngeal connectives connect the . . . . . . .

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