Assertion (A): The person with Diabetes insipidus feels thirsty. Reason (R): A person with Diabetes insipidus suffers from excess secretion of vasopressin.
✓ Correct answer: c) A is true but R is false
ExplanationAssertion (A) is true: Diabetes insipidus(DI) is a condition characterized by the inability to properly regulate water balance in the body.It leads to excessive urination (polyuria) and dehydration.As a result, individuals with DI often experience intense thirst (polydipsia) to compensate for the excessive water loss.Reason (R) is false: Diabetes insipidus is caused by either insufficient secretion of vasopressin (antidiuretic hormone) or the kidneys’ inability to respond to vasopressin.Excess secretion of vasopressin is not associated with DI.Excess secretion of vasopressin would lead to water retention, not excessive thirst.Thus, the Assertion A is true but the Reason R is false.442
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