Which of the following pigments is responsible for absorbing light energy and transferring it to chlorophyll a?
Accessory pigments like chlorophyll b, xanthophylls, and carotenoids absorb light energy and transfer it to chlorophyll a for photosynthesis.
Ref: NCERT Class 11 Biology Chapter 11: Photosynthesis in Higher Plants Photosynthesis - Early Experiments and Pigments