Which of the following is an example of the symbiotic relationship known as mutualism?

Corynebacterium on the surface of the eye
saprophytic Mycobacterium of the ear
E. coli within the large intestine
a tapeworm in the gastrointestinal tract of a human

E. coli within the large intestine

Explanation:

A symbiotic relationship is known to be a relationship between two organisms. In this relationship, one organism may benefits and the other suffers[ Parasitism} or both organisms benefit [ mutualism], while one organism may benefit and the other neither benefits nor suffers[ commensalism].

Mutualism is an example of symbiotic relationship where the two organisms involve benefits.

In this case, Man benefit from the presence of E, coli in the large intestine because it keeps the digestive system healthy, help in the digestion of food and the production of vitamin K which helps in blood clotting. The E. coli also benefits because there is availability of nutrients that it needed.

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