Question

Which is a component of chlorophyll?

• A. $Mg$
• B. $Mn$
• C. $Zn$
• D. $Fe$

Answer 1

The correct option is A $Mg$

Chlorophyll is the green colored pigment which is present in the plastid. It is located in the thylakoid membranes of the plastids. It has a molecular formula of C${}_{55}$H${}_{72}$O${}_5$N${}_4$Mg. Magnesium is centrally located in the chlorophyll. It consists of porphyrin ring which has magnesium ion in the center. The two types of chlorophyll are chlorophyll a and b. Chlorophyll a has a porphyrin ring with the side chain of the methyl group and a phytol chain. Chlorophyll b has a porphyrin ring with the side chain of aldehyde group and a phytol chain. It acts like an accessory pigment.

So, the correct answer is option A.