Assertion: In Griffith’s experiment mice were injected by a mixture of heat killed Smooth type bacteria and live Rough type bacteria. Some mice died of pneumonia and their blood contained both live Rough type bacteria and live Smooth type bacteria.
Reason: The dead Smooth type bacteria became alive and caused pneumonia. Griffith named it as transforming principle.

Both Assertion and Reason are true and the reason is the correct explanation of the assertion

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Both Assertion and Reason are true but the reason is not the correct explanation of the assertion

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Assertion is true but Reason is false

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Both Assertion and Reason are false

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Solution

The correct option is C Assertion is true but Reason is false
In Griffith’s experiment mice were injected by a mixture of heat killed Smooth type bacteria and live Rough type bacteria. Some mice died of pneumonia and their blood contained both live Rough type bacteria and live Smooth type bacteria. The rough strain of bacteria was transformed to the smooth strain and killed the mice.

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