Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Mesosomes in bacteria are considered homologous to the mitochondria of eukaryotes. Reason (R): Mesosomes contain respiratory enzymes and help in cellular respiration. In the light of the above statements, choose the most appropriate answer from the options given below:

Step-by-step solution

Assertion (A) is incorrect because mesosomes and mitochondria are analogous structures, not homologous. Analogous structures perform the same function but have different structural origins (mesosomes are extensions of the prokaryotic plasma membrane, whereas mitochondria are double-membrane bound eukaryotic organelles). Reason (R) is correct because mesosomes contain respiratory enzymes and perform the function of cellular respiration in bacteria, which is functionally similar to what mitochondria do in eukaryotes.