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.
Endocrine System
2 Likes
Answer
A is true and R is false.
Explanation — Thyroxine is an iodine-containing hormone and is very important for our body. However, its oversecretion is harmful too as it can cause an increase in metabolic rate and heartbeat, weight loss, restlessness, and other issues.
Answered By
3 Likes
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.