Question

Choose the most appropriate alternatives from amongst the following-

The cerebral hemispheres in mammals are connected by-

• A. Corpus luteum
• B. Hypothalamus
• C. Pons varolli
• D. Corpus callosum

Answer 1

The correct option is D

Corpus callosum

The correct option is D

Explanation of the correct option-

1. The cerebral hemispheres make up the cerebrum.
2. It is the largest part of the brain, occupying two-thirds of the region.
3. Both the hemispheres are connected by a nerve tract called the corpus callosum. It helps both the sides of the brain communicate and send signals.

Explanation of the incorrect option-

Option A

1. The Corpus luteum is a hormone-secreting structure formed at the site of the follicle in the ovaries. It releases female hormones like progesterone.

Option B

1. Hypothalamus is a small region located below the thalamus at the base of the brain. It controls various involuntary activities and the functioning of the pituitary gland.

Option C

1. Pons varolli is a small region of the hindbrain, situated between the midbrain and medulla oblongata. It acts as a relay station for the cerebellum, spinal cord, and rest of the body.

Final answer

The cerebral hemispheres in mammals are connected by the Corpus callosum.