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Question

Which one is found in alimentary canal of humans?

A
Pseudomonas
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B
Rhizobium
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C
Bacillus
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D
Escherichia coli
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Solution

The correct option is D Escherichia coli
Escherichia coli (E. coli) is a bacteria that commonly lives in the alimentary canal of of warm-blooded organisms like animal and human. Most strains of E. coli are harmless and they are the part of the normal flora of gut. They live in symbiotic association. However, certain strains of E. coli may cause cramps, discomfort and food poisoning.
Thus, the correct answer is 'Escherichia coli.'

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