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Question
plants have multiple pigments in their leaves besides chlorophyll to help absorb the energy from visible light. collectively, these pigments are able to absorb wavelengths of visible light.
Plants have multiple pigments (chlorophyll a, chlorophyll b, carotenoids etc.). Each pigment has its own absorption spectrum. By having multiple pigments, the plant can absorb a wider range of wavelengths of visible light. For example, chlorophyll a and b mainly absorb in the blue - violet and red regions, while carotenoids can absorb some light in the green - yellow regions (where chlorophyll absorption is low). So collectively, they cover more of the visible light spectrum.
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