Which is not correctly matched?
2022
Which is not correctly matched?
- A.
Vitamin A – Night Blindness
- B.
Vitamin B – Beriberi
- C.
Vitamin C – Colour blindness
- D.
Vitamin D – Rickets
Attempted by 333 students.
Show answer & explanation
Correct answer: C
Answer: Vitamin C – Colour blindness – is not correctly matched.
Why: Vitamin C deficiency causes scurvy (bleeding gums, poor wound healing, easy bruising). Colour blindness is usually an inherited condition affecting cone photopigments and is not caused by vitamin C deficiency.
Correct associations (with brief notes):
Vitamin A → Night blindness: Vitamin A is needed to form retinal pigments (rhodopsin), so deficiency impairs vision in low light.
Vitamin B1 (thiamine) → Beriberi: Thiamine deficiency affects carbohydrate metabolism and the nervous and cardiovascular systems.
Vitamin C → Scurvy: Causes bleeding gums, poor wound healing, and easy bruising.
Vitamin D → Rickets: Deficiency impairs bone mineralization in children, leading to rickets.
Summary: The incorrect match is the statement that links vitamin C with colour blindness; vitamin C deficiency causes scurvy, while colour blindness is typically genetic.
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