A) Intestine
B) Colon
C) Stomach
D) Liver
Correct Answer: A
Solution :
The bacteria are found in the intestine, which in fact are the main source of vitamin-\[{{\text{B}}_{\text{12}}}\] as vitamin-\[{{\text{B}}_{\text{12}}}\] is not found in plants. Few micro-organisms of the rumen of stomach of ruminant mammals also synthesize large quantity of vitamin-\[{{\text{B}}_{\text{12}}}\].
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