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Question

Bacteria present in the intestinal tract synthesise vitamin K which is used by man and the bacteria utilise the food that is supplied. The given interaction can be termed as

A
Mutualism
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B
Parasitism
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C
Commensalism
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D
None of the above
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Solution

The correct option is A Mutualism
Mutualism is when two organisms of different species work together and benefit from the relationship. Vitamin K is made naturally in the intestinal tract by the gut flora which is an important factor in bone health and wound healing. The intestinal tract of man provides food and habitat for the bacterium to survive. Hence, it is a mutualistic relation. Thus, the correct answer is option A.

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