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Unit 4 · Biological Basis of Behaviour Psychology · June 2025 · 28 Jun, Shift 2

The most recent reported evolutionary development of the brain convulsions has two main regions -

A. Dorsal portion

B. Ventral portion

C. Gyri

D. Sulci

Choose the most appropriate answer from the options given below:

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Correct answer: D. C & D only

Explanation

The convoluted cerebral cortex, the most recent evolutionary development, is folded into ridges (gyri) and grooves (sulci).

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