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Question

Deficiency of vitamin A in the body results in insufficient rhodopsin in the rods which leads to

A
Colour blindness
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B
Total blindness
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C
Night blindness
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D
Myopia
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Solution

The correct option is D Night blindness
Nyctalopia also called night blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases. Night blindness may exist from birth, or be caused by injury or malnutrition (for example, a lack of vitamin A). It can be described as insufficient adaptation to darkness.
Rhodopsin helps seeing lighted things and is synthesized in the presence of vitamin A (retinol). Its deficiency leads to lack of clear vision during night.

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