Q. Which one of the following is not a photosynthetic pigment? Answer:
Anthocyanin
Notes: There are three basic classes of photosynthetic pigments: Chlorophylls (greenish pigments), Carotenoids (usually red, orange, or yellow pigments) and Phycobilins (water-soluble pigments found in the cytoplasm). Anthocyanins play no part in photosynthesis.