| Assertion (A): | Addison's disease and Cushing's disorder result from deficiency of hormones secreted by adrenal medulla | 
| Reason (R): | Patients suffering from these experience low blood sugar level, high Na+ and low K+ in plasma | 
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). | 
| 3. | (A) is true but (R) is false. | 
| 4. | Both (A) and (R) are false. | 
| Assertion (A): | Hypothalamus is connected to the posterior lobe of the pituitary by hypophyseal portal veins | 
| Reason (R): | The hypophyseal portal arteries carry blood from the hypothalamus to the neurohypophysis | 
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). | 
| 3. | (A) is true but (R) is false. | 
| 4. | Both (A) and (R) are false. | 
| Assertion (A): | Atrial natriuretic factor (ANF) is secreted by the wall of heart's atria | 
| Reason (R): | ANF is secreted when there is a decrease in blood flow to the heart | 
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). | 
| 3. | (A) is true but (R) is false. | 
| 4. | Both (A) and (R) are false. | 
| Assertion (A): | Diabetes mellitus is a hypothalamic disorder | 
| Reason (R): | Low blood glucose level and cholesterol level cause diabetes mellitus | 
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). | 
| 3. | (A) is true but (R) is false. | 
| 4. | Both (A) and (R) are false. | 
| Assertion (A): | Secretin stimulates release of pancreatic enzymes, water and bicarbonate ions from liver and pancreas | 
| Reason (R): | It acts majorly both on exocrine and endocrine parts of pancreas and liver | 
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). | 
| 3. | (A) is true but (R) is false. | 
| 4. | Both (A) and (R) are false. | 
| Assertion (A): | Melatonin secretion is high at night and low during the day | 
| Reason (R): | Tryptophan is a non-essential amino acid | 
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). | 
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). | 
| 3. | (A) is true but (R) is false. | 
| 4. | Both (A) and (R) are false. | 
| 1. | Thyroid gland secretes only iodothyronines | 
| 2. | ADH and ANF are synergistic to each other | 
| 3. | All hypothalamic hormones originate in the hypothalamic neurons, pass through axons and are released from their nerve endings in the pituitary gland | 
| 4. | Gonads and pancreas do not only function as endocrine glands. |