Chlorophyll a has

Solution (By Examveda Team)

Chlorophyll has no functional group.
Chlorophyll a is a specific form of chlorophyll used in oxygenic photosynthesis.
The molecular structure of chlorophyll consists of a chlorin ring, whose four nitrogen atoms surround a central magnesium atom, and has several other attached side chains and a hydrocarbon tail formed by a phytol ester.