Which one of the following is a fat-soluble vitamin and its related de...
Retinol, also known as Vitamin A, is a fat-soluble vitamin that is important for vision, immune function, and cell growth and differentiation. Its deficiency can lead to a condition called xerophthalmia, which is characterized by dry eyes, night blindness, and ultimately, blindness.
Option 2 is incorrect because cobalamin (Vitamin B12) deficiency can lead to megaloblastic anemia, but not beriberi, which is caused by thiamine (Vitamin B1) deficiency.
Option 3 is incorrect because calciferol (Vitamin D) deficiency can lead to rickets in children and osteomalacia in adults, but not pellagra, which is caused by niacin (Vitamin B3) deficiency.
Option 4 is also incorrect because ascorbic acid (Vitamin C) deficiency can lead to scurvy, but it is a water-soluble vitamin, not a fat-soluble one.