NEETBotany-Microbes in Human Welfare
NEET Botany Bacterial Pathogenicity Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 12
Given below are two statements Statement I: When Streptococcus pneumoniae bacteria are grown on a culture plate, some produce smooth shiny colonies (S) while others produce rough colonies(R). Statement II: Mice infected with the (S) strain do not develop pneumonia but mice infected with the R strain die from pneumonia infection. Choose the correct answer from the option given below:
A
Both Statement I and Statement II are incorrect
B
Statement I is correct but Statement II is incorrect
C
Statement I is incorrect but Statement II is correct
D
Both Statement I and Statement II are correct
Correct Answer
Option B
Detailed Explanation
The S strain is virulent and causes pneumonia, while the R strain is non-virulent. The statements are reversed.
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