Which gland is known as the master gland of the brain?

Correct option is B

Ans. (b) Pituitary
Sol. The pituitary gland is called the "master gland" because it regulates the activity of most other endocrine glands by secreting various hormones.
Explanation of each option:
· (a) Thyroid – It controls metabolism, but it is not the master gland.
· (b) Pituitary – Correct answer. It regulates other endocrine glands and controls growth, reproduction, and metabolism.
· (c) Adrenal – Produces stress-related hormones like cortisol and adrenaline, but it is not the master gland.
· (d) Parathyroid – Regulates calcium levels in the blood, not considered the master gland.