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Intestinal bacteria are main source of which one of the following vitamins?

Options

  1. AVitamin E
  2. BVitamin C
  3. CVitamin B₁₂
  4. DVitamin A

Correct answer

C. Vitamin B₁₂

Step-by-step solution

Human faeces contain appreciable quantities of vitamin B12 or vitamin B12-like material presumably produced by bacteria in the colon, but this is unavailable to the non-coprophagic individual. However, the human small intestine also often harbours a considerable microflora and this is even more extensive in apparently healthy southern Indian subjects.

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