Chlorophyll $a$ is the primary pigment for the light reaction. What are accessory pigments? What is their role in photosynthesis?

(N/A) Chlorophyll $b$,xanthophylls,and carotenoids are accessory pigments.
They are also photosynthetic pigments.
They are not directly associated with the excitation of electrons in the reaction center.
However,they absorb solar energy at different wavelengths and transfer this energy towards chlorophyll $a$.
Chlorophyll $a$ absorbs the maximum radiation in the blue and red regions of the spectrum,making it the primary pigment,whereas chlorophyll $b$,xanthophylls,and carotenoids act as accessory pigments by broadening the spectrum of light absorption.