The chemical structure of chlorophyll a varies from chlorophyll b due to difference between

Options

(a) CH₃ and C₂H₅
(b) CH₃ and HCH=CH₂
(c) CH₃ and CHO
(d) CHO and CH=CH₂

Correct Answer:

CH₃ and CHO

Explanation:

The molecular formula of chlorophyll a (bule green pigment) is C₅₅H₇₂O₅N₄Mg and that of chlorophyll b (yellow-green pigment) is C₅₅H₇₀O₆N₄Mg. Chlorophyll a and Chlorophlly b differ in such a way that in chlorophyll b there is a – CHO group instead of -CH₃ group at the 3rd C atom in II pyrrole ring.