Reason
Cholecalciferol is synthesised in skin by the action of sunlight.
Assertion
Deficiency of vitamin D causes bone weakness.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Assertion is correct but Reason is incorrect
C
Both Assertion and Reason are incorrect
D
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Correct option is B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Deficiency of vitamin D causes bone weakness because Vitamin D is essential for strong bones because it helps the body use calcium from the diet.
- Cholecalciferol(in the active form of vitamin D) is synthesized in the skin by the action of sunlight which is further hydroxylated by the kidneys to form calcitriol (also known as 1,25-dihydroxycholecalciferol).calcitriol is the biologically active form of VItamin D.
- Hence 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.
- So, the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.