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Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?
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- Violet and blue
- Blue and green
- Green and red
- Red and violet
Correct Option: A
Carotenoids have three absorption peaks in the blue-violet range of the spectrum. In photosynthetic organisms, carotenoids play a vital role in the photosynthetic reaction centre. They either participate in the energy-transfer process, or protect the reaction center from auto-oxidation. In nonphotosynthesizing organisms, carotenoids have been linked to oxidation-preventing mechanisms.
