MHT CET · BIOLOGY · STD 12 - 9. Control and Coordination

Select the correct statement regarding spinal cord.

A It lies within the central canal of vertebral column.
B The bunch of nerves in the hind part is called cauda equina.
C It shows neural canal in the centre.
D Butterfly shaped area on the inner side shows presence of white matter.

Verified Solution

Answer & Solution

Correct Answer

(B) The bunch of nerves in the hind part is called cauda equina.

Step-by-step Solution

Detailed explanation

(A) Spinal cord within the neural canal of the vertebral column.
(C) Spinal cord shows central canal in the centre.
(D) Butterfly shaped area on the inner side shows presence of grey matter.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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