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Biology · PLANT KINGDOM

हिन्दी

The color of brown algae varies from olive green to various shades of brown. This chromatic variation is primarily determined by the concentration of:

  1. Xanthophyll pigment, specifically fucoxanthin, alongside chlorophyll a and c.
  2. Chlorophyll d and floridean starch.
  3. Chlorophyll b and r-phycoerythrin.
  4. Carotenoids and phycocyanin exclusively without chlorophyll a.

Correct answer · Option 1

Xanthophyll pigment, specifically fucoxanthin, alongside chlorophyll a and c.

Explanation

Phaeophyceae contain chlorophyll a, c, carotenoids, and xanthophylls; the shade of brown depends on the amount of fucoxanthin present.
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