Q. Consider the following statements. (A) On a culture plate, streptococcus pneumonia produces shiny (S) and rough (R) colonies. (B) R strain of pneumococcus is a virulent strain due to the presence of a mucous coat in it. Select the correct option.
A) A is true, B is false
B) Both A and B are true
C) A is false, B true
D) Both A and B are false
Explanation
On a culture plate, pneumococcus bacteria produces two colonies consisting of virulent S-strain and non-virulent R-strain. The former possesses a mucous polysaccharide coat while it is absent in the later strain.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.