Q.

One of the following confers certain unique phenotypic characters to bacterial cells such as resistance to antibiotics 

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a

Genomic DNA  
 

b

Mesosome 
 

c

Plasmid DNA  
 

d

Chromatophore

answer is C.

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Detailed Solution

NCERT CLASS-XI : Page No. 128.

. In addition to the genomic DNA (the single chromosome/circular DNA), many bacteria have small circular DNA outside the genomic DNA. These smaller DNA are called plasmids. The plasmid DNA confers certain unique phenotypic characters to such bacteria. One such character is resistance to antibiotics.
 

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