Consider the following statements and select the correct answer from the codes given below:
Assertion (A): If somebody stops taking green vegetables, he will suffer from night blindness.
Reason (R): He will suffer from vitamin A deficiency

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true, but R is not the correct explanation of A.
C. A is true, but R is false.
D. A is false, but R is true

Answer

A

Explanation

Vitamin A has a major role in photo- transduction. Its deficiency causes night blindness in humans. Xerophthalmia, keratomalacia can also occur with its deficiency. Green, yellow-orange-red (dark- coloured) fruits and vegetables, eggs, milk, fortified cereals are rich source of vitamin A. Their avoidance over a long period may cause the vit-A deficiency symptoms.