Why does a pigment appear to be a particular colour?
AIt reflects or transmits that colour
BIt converts other colours into that one
CIt emits that colour as fresh light
DIt absorbs that colour most strongly
Answer & Solution
Correct answer: A. It reflects or transmits that colour
1. Each pigment has evolved to absorb only certain wavelengths of visible light.
2. Pigments reflect or transmit the wavelengths they cannot absorb.
3. Those reflected wavelengths make the pigment appear in the corresponding colour.
4. Assuming a pigment shows the colour it absorbs reverses the relationship completely.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.2 The Light-Dependent Reactions of Photosynthesis_
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