In earthworm,nerve ring lies in (1)2nd segment (2)4th segment (3)5th segment (4)7th segment
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Answer:
option 2 is correct
Explanation:
nerve ring lies in 3 to 4th segment
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Nerve ring is a ring like spherical structure which lies around the pharynx in 3rd and 4th segment. Ventral nerve cord is a long thread like double layered structure, which arises from the posterior part of sub-pharyngeal ganglia and runs the posteriorly up to the last segment of the body.
in earthworm nerve ring lies in (2)4th segment.
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