Select the incorrect option regarding the ner | vedclass

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(D) In the cockroach,the nervous system consists of a series of fused,segmentally arranged ganglia joined by paired longitudinal connectives on the ve

Vedclass · Accepted Answer

All options are correct.

Vedclass · Answer

(D) In the cockroach,the nervous system consists of a series of fused,segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side. Three ganglia lie in the thorax,and six ganglia lie in the abdomen. The nervous system of the cockroach is spread throughout the body. The head holds a bit of a nervous system while the rest is situated along the ventral (belly-side) part of its body. Option $B$ is incorrect because the distribution is reversed: there are $3$ thoracic ganglia and $6$ abdominal ganglia,but the statement in the option is factually incorrect regarding the specific arrangement or count if interpreted as a general description of the system's structure. Actually,the nervous system is segmentally arranged,and the statement in $B$ is the standard anatomical fact,making $D$ the correct choice if all are true. However,based on standard $NCERT$,the nervous system is $3$ ganglia in the thorax and $6$ in the abdomen. Thus,all statements provided are technically correct descriptions of the cockroach nervous system.

Select the incorrect option regarding the nervous system of a cockroach.

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