Medical
Biology
Photosynthetic Pigments
Question
The chemical structure of chlorophyll a varies from chlorophyll b due to difference between

CH3 and C2H5

CH3 and CH = CH2 

CH3 and CHO

CHO and CH = CH2 

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Solution

The chemical structure of chlorophyll 'a' varies from chlorophyll 'b' due to the difference between CH3 and CHO. In chlorophyll, a third carbon of the side group is -CH3 . In chlorophyll b, side group at the third carbon  is -CHO. So, the correct answer is option is C.