Concept:Accessory pigments help photosynthesis by capturing light energy that the main pigment, chlorophyll
a, cannot absorb.
Explanation:Chlorophyll
a is the primary pigment, but it absorbs only certain wavelengths of light.
Accessory pigments such as carotenoids absorb light in other regions of the spectrum.
They transfer the absorbed energy to chlorophyll
a, allowing it to drive photosynthesis.
In this way, the plant can use a wider range of light energy.
Answer:Their major role is to trap light energy that chlorophyll cannot absorb.
Hence, the correct option is B.