Which one of the following is <strong>NOT</strong> a function of the pigment carotenoid?

  1. A. Responsible for yellow-orange hues of autumnal leaves
  2. B. Protecting chlorophyll from photo-oxidation
  3. C. Photoprotective role in our eyes
  4. D. Reaction centre in the pigment system

Correct Answer: D. Reaction centre in the pigment system

Explanation

Chlorophyll-a acts as the primary reaction centre in the pigment system, not carotenoids. Carotenoids function as accessory pigments that harvest light and protect against photo-oxidation.

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