Assertion :The pathogenecity of the bacteria is due to outer membrane covering. Reason: The covering mainly consists of lipopolysaccharide.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
S.typhi is a gram negative bacterium. It consists of outer covering of lipopolysaccharide. It is made up of antigen O, polysaccharide core and lipid A.

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