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Biology · 2023 · 1 mark
CBSE 2023 · Region 3 · Set 3 · Q16
Assertion (A): Mary Mallon continued to spread typhoid for many years. Reason (R): Salmonella typhi generally enters the small intestine through food…
Assertion (A) : Mary Mallon continued to spread typhoid for many years.
Reason (R) : Salmonella typhi generally enters the small intestine through food and water contaminated with it.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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CBSE Class 12 Biology past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.