Question

Question 29
Chlorophyll-'a' is the primary pigment for the light reaction. What are accessory pigments? What is their role in photosynthesis?

Answer 1

Accessory pigments are also photosynthetic pigments. These are chlorophyll-b, xanthophyll and carotenoids. These are not directly involved in an emission of excited electrons, but they help in harvesting solar radiation and pass it on to chlorophyll-a.
This pigment itself absorbs maximum radiation at the blue and red region. So, Chlorophyll a is the chief pigment of photosynthesis and others (i.e., chlorophyll-b, xanthophyll and carotenoids) are accessory pigments.