Pigment present in red algae is_____________?

Correct answer: C. phycoerythrin

  • A. fucoxanthin
  • B. phycocyanin
  • C. phycoerythrin
  • D. bilirubin

Explanation

Red algae contain the red phycobilin pigment phycoerythrin, which absorbs green and blue light and helps them photosynthesise at greater water depths. A common mistake is phycocyanin, but it is the blue pigment especially associated with cyanobacteria and also occurs in some red algal species in smaller amounts.

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About Classification of Biological Molecules

Biological molecules are classified as carbohydrates, lipids, proteins and nucleic acids, with water, minerals and vitamins also supporting cellular processes. The key distinctions involve their monomers, chemical bonds, structures and functions, including glucose and starch, fatty acids and triglycerides, amino acids and polypeptides, and nucleotides in DNA and RNA.

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