Brown algae is characterised by the presence of

Explanation

a. Brown algae are the members of the Class Phaeophyceae. Their chromatopores are ellipsoidal or discoid. They contain chlorophyll a, chl c, b­ and c­carotenes and xanthophyll pigments (e.g., lutein, flavoxanthin, violaxanthin). They alsocontain large amount of a brown pigment - fucoxanthin which masks the green colour of chlorophyll pigment. This gives characteristic brown colour to these plants, hence the name brown algae. b. Haematochrome is not a characteristic pigment of brown algae. c. and d. Phycocyanin and Phycoerythrin are pigments typically found in some types of red algae, not brown algae.