The main difference between the molecules of chlorophyll a and b … - Vidyadip

MCQ

The main difference between the molecules of chlorophyll a and b is

A
chlorophyll a has an aldehyde group while chlorophyll b has a methyl group.
B
chlorophyll a has a methyl group while chlorophyll b has an aldehyde group.
C
the phytol tail is absent in chlorophyll b and is present in chlorophyll a
D
the porphyrin group in chlorophyll b has manganese atom but chlorophyll a has magnesium atom.

✓

Answer

B. chlorophyll a has a methyl group while chlorophyll b has an aldehyde group.
Explanation:
Chlorophyll a and b differ in the composition of a side chain (chlorophyll $a$ has $- CH _3$, while b has - CHO at carbon atom 3 ).

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