Question

Name the hormone which controls the basal metabolic rate in animals.

• A. Adrenaline
• B. Thyroxine
• C. Aldosterone
• D. Oxytocin

Answer 1

The correct option is B

Thyroxine

The correct option is B

Explanation of the correct option:

1. Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland.
2. It plays vital roles in digestion, heart and muscle function, brain development, and maintenance of bones.
3. Thyroid hormones play vital roles in regulating the body’s metabolic rate, heart, and digestive functions, muscle control, brain development, and maintenance of bones.

Explanation of the incorrect options:

Option A

1. Adrenaline hormone is secreted by the adrenal glands in the center of the medulla.
2. The main function of adrenaline is to produce contraction of spleen so as to store the blood, increase heartbeat and sweating, reduce the blood clotting period, and pupillary dilation.

Option C

The main function of aldosterone is to regulate blood pressure and maintain the electrolyte balance.

Option D

Oxytocin stimulates the contraction of smooth muscles in the uterus at the time of childbirth and the ejection of milk from mammary glands.

Final answer: Thyroxine hormone controls the basal metabolic rate in animals.