Assertion : The colour of the leaf is due to the presence of four pigments-chlorophyll $a$, chloroph

Question

Assertion : The colour of the leaf is due to the presence of four pigments-chlorophyll $a$, chlorophyll $b_{	ext {, }}$ xanthophylls and carotenoids.\ Reason : Chlorophyll $b$ is the chief pigment associated with photosynthesis.\

Professor PC Thomas Classes · Answer

(c) : Chlorophyll $a$ is found in all photosynthetic plants except bacteria. Hence, it is termed as universal photosynthetic pigment. It is also called primary photosynthetic pigment because it performs primary reaction of photosynthesis which involves conversion of light into chemical energy. Chlorophyll $b$, carotenoids and xanthophyll are considered as accessory pigments.