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Q.

R strain of Streptococcus pneumoniae differs with S strain in 

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a

lacking plasmids

b

being gram positive

c

lacking glycocalyx

d

lacking mesosomes

answer is C.

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Detailed Solution

R strain of Sterptococcus pneumoniae is avirulent, lacks glycocalyx and forms rough colonies on agar plates. S strain is virulent, has glycocalyx and forms smooth and shiny colonies on agar plates. 

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