Bacteria living in the human large intestine, that feed on undigested food without harming the host are termed as
A
Predators
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B
Commensals
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C
Symbionts
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D
Parasites
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Solution
The correct option is B Commensals
Commensals are organisms that get benefit from the host and in return, the host is neither benefited nor harmed. Bacteria living in the human large intestine that feed on undigested food without harming the host are termed as commensals.
Predators are those organisms which kill the host to obtain food.
Symbionts are those organisms in which both the partners are benefited from each other.
Parasites are those organisms which obtain resources from only one host and in return, the host is harmed.