Question

Element located in centre of porphyrin ring of chlorophyll is

• A. Potassium
• B. Manganese
• C. Magnesium
• D. Calcium

Answer 1

The correct option is C Magnesium

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${}_{55}$N${}_{44}$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 C.