Q200 / 200 · NEET 2024 · Zoology

Given below are two statements: Statement I: The cerebral hemispheres are connected by nerve tract known as corpus callosum. Statement II: The brain stem consists of the medulla oblongata, pons and cerebrum. In the light of the above statements, choose the most appropriate answer from the options given below:

  • A
    Both Statement I and Statement II are incorrect.
  • Correct answer
    B
    Statement I is correct but Statement II is incorrect.
  • C
    Statement I is incorrect but Statement II is correct.
  • D
    Both Statement I and Statement II are correct.

Solution

The correct answer is option (2) as statement I is correct but statement II is incorrect. In human brain, a deep cleft divides the cerebrum longitudinally into two halves, which are termed as the left and right cerebral hemispheres. The cerebral hemispheres are connected by a tract of nerve fibres called corpus callosum. Three major regions make up the brain stem i.e. mid brain, pons and medulla oblongata. Cerebrum is a part of forebrain which does not form brain stem. Options (1), (3) and (4) are incorrect.

Hence, the correct answer is option: 'B'.

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