Biology
Assertion (A): Thyroxine is the hormone which regulates basal metabolism of the body and speeds up the rate of most activities of the body.
Reason (R): Its undersecretion is harmful which can cause different types of ailments but its oversecretion is very important as it increases the metobolic rate of the body.
- Both A and R are true.
- Both A and R are false.
- A is true and R is false.
- A is false and R is true.
Related Questions
Assertion (A): The exocrine glands send their secretions (enzymes) to the target organs through ducts.
Reason (R): Such glands are called exocrine glands because their secretions act on the surface of organs.
- Both A and R are true.
- Both A and R are false.
- A is true and R is false.
- A is false and R is true.
Assertion (A): Endocrine glands pour their secretions directly into the blood in very large quantities.
Reason (R): Hormones are utilized in very large quantities continuously throughout the body as these secretions regulate the growth and development as well as many other metabolic activities of the body.
- Both A and R are true.
- Both A and R are false.
- A is true and R is false.
- A is false and R is true.
Assertion (A): The hormone epinephrine is secreted by the Adrenal cortex when a person is under stress (physical or emotional), fearful or angry.
Reason (R): This hormone prepares the body to meet any emergency situation, i.e. to face the danger or flee from a situation.
- Both A and R are true.
- Both A and R are false.
- A is true and R is false.
- A is false and R is true.
Assertion (A): Oversecretion of insulin causes diabetes mellitus.
Reason (R): Insulin converts glycogen to glucose which increases blood sugar.
- Both A and R are true.
- Both A and R are false.
- A is true and R is false.
- A is false and R is true.