In adult urochordate, the dorsal nerve cord of larva is changed into

Ganglion

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Brain and spinal cord

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Brain and nerve cord

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Remains as such

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Solution

The correct option is C Ganglion
A. Ganglion
EXPLANATION: In adult urochordate, the dorsal nerve cord of larva is converted to small cerebral ganglion. Brain is absent in the adult urochordates. The urochordate continually pumps water into the body, through its pharynx and out of the body.

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The dorsal root of spinal nerve mediates the movement of motor impulses to go out of the spinal cord.

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