A) nightblindness
B) scurvy
C) rickets
D) beri-beri
Correct Answer: B
Solution :
Scurvy is caused by the deficiency of vitamin-C (ascorbic acid). It is characterized by spongy and bleeding gums, loose and falling teeth, fregility of blood capillaries, extensive subcutaneous haemorrhages etc. People depending soley upon milk, meat, eggs and cereals for food usually suffer from scurvey. Vegetable eaters never get scurvey. The main sources are citrus fruits, fresh green vegetables and salad. Vegetables like cabbage, spinach etc, are good sources of vitamin-C. Night blindness is caused by the deficiency of vitamin-A. It is necessary for rhodopsin of rod cells and iodopsin of cone cells of the retina of eye etc. Rickets is caused by the deficiency of vitamin- D. Rickets in children is commonly seen. Vitamin-D promotes absorption of calcium and phosphorus by the intestine. Beri-Beri is caused by the deficiency of vitamin-\[{{B}_{1}}\].
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