Pigmentation in algae:
Ø Algae show great diversity in pigmentation.
Ø Many coloured pigments such as green, red, yellow, and blue have been found in marine and freshwater algae.
Ø Different groups of algae have different and specific pigment composition.
Ø Pigments are usually found in specialized plastids called chromophores in all groups of algae except in the members of Cyanophyceae (blue green algae).
Ø Distribution pattern of pigments has great taxonomic significance in algal systematics.
Ø Classification of algae proposed by Fritsch is primarily based of the pigmentation of algae.
Ø All major algal groups have at least one characteristic pigment in their cells.
Pigments in algae belong to THREE major categories based on their physical and chemical properties.