Assertion. Hormones are the secretions from some glandular parts of the body which regulate certain physiological processes by chemical means.

Reason. Hormones are directly poured into the target organs which are usually very close to the source/gland secreting the hormones.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion. Adrenal medulla secretes glucocorticoids which regulate glucose levels of the blood.

Reason. Glucocorticoids, a kind of cortisone, stimulate the deposition of extra glucose in blood as glycogen in the liver and muscles. The roles of insulin and glucocorticoids are the same.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion. Cretinism is a condition which affects adults causing dwarfism and mental retardation.

Reason. Cretinism is a kind of hypothyroidism. This disease occurs due to the defective development, or early atrophy (degeneration), of the thyroid.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion. The placenta is a vital organ during pregnancy, responsible for providing nutrients and oxygen to the developing foetus.

Reason. The placenta develops from the fusion of the zygote and the endometrial lining, forming a specialized tissue structure that facilitates the exchange of substances between the maternal and foetal bloodstreams.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.