| Assertion (A): | Vasopressin is also known as anti-diuretic hormone | 
| Reason (R): | Vasopressin stimulates the reabsorption of water by distal tubules of nephron and prevents diuresis | 
| 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): | PTH and thyrocalcitonin are antagonistic hormones | 
| Reason (R): | PTH is produced by the parathyroid gland while thyrocalcitonin is produced by thyroid gland | 
| 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): | Aldosterone helps in the maintenance of electrolyte balance and body fluid volume | 
| Reason (R): | Aldosterone stimulates the reabsorption of \(K^+\) and \(PO^{2-}_4\) ions from DCT | 
| 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): | Glucagon is a hyperglycemic hormone | 
| Reason (R): | Glucagon reduces the cellular glucose uptake and utilisation thereby increasing blood sugar level | 
| 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): | Hormone receptors can be present inside the cell or on the cell membrane | 
| Reason (R): | Receptors for different hormones may be present on the same cell | 
| 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): | Immune response gradually decreases with age | 
| Reason (R): | One of the factors is degeneration of thymus gland with ageing | 
| 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): | Ketonuria and glycosuria are the characteristic symptoms of diabetes insipidus | 
| Reason (R): | Diabetes insipidus is caused due to deficiency of insulin | 
| 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): | Estrogen shows its effects by regulating the gene expression in its target organs | 
| Reason (R): | Estrogen being a steroid hormone interacts with its intracellular receptors and its hormone receptor complex interacts with cellular genome | 
| 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): | Hormone such as cortisol directly acts on nuclear DNA of target cells through intracellular receptor | 
| Reason (R): | Steroid based hormones can cross the amphipathic lipid bilayer | 
| 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): | 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. |