Given an account of Chlorophyll.

Explanation

Chlorophyll 'a' is the primary pigment which acts as a reaction centre and all other pigments act as accessory pigments and trap solar energy and then transfer it to chlorophyll 'a'. Chlorophyll molecules have a tadpole like structure . It consists of four pyrrole rings linked together by C - H bridges . Each pyrrole ring comprise of four carbons and one nitrogen atom . Porphyrin ring has several side groups which alter the properties of the pigment . Different side groups are indicative of various types of chlorophyll . The Phytol tail made up of 20 carbon alcohol is attached to carbon 7 of the Pyrrole ring IV. It has along propionic acid ester bond. Long lipophilic tail helps in anchoring chlorophyll to the lamellae .