Beri-beri results from a deficiency of:
A{'text': 'Vitamin A'}
B{'text': 'Vitamin C'}
C{'text': 'Vitamin K'}
D{'text': 'Vitamin B1'}
Answer & Solution
Correct answer: D. {'text': 'Vitamin B1'}
1. Beri-beri is a deficiency disease that affects the nervous and circulatory systems.
2. It is caused specifically by a lack of **Vitamin B1 (thiamine)**.
3. Vitamin A deficiency causes night blindness; Vitamin C deficiency causes scurvy; Vitamin K deficiency causes poor blood clotting.
4. Hence the deficient vitamin is **B1**.
_Source: Selina Concise ICSE Class 8 Biology Ch 8 "Diseases and First Aid", Deficiency diseases section_
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