Multiple choice In which of the following algae is xanthophyll present? (a) Green (b) Red (c) Brown a and b only a only c b and c a, b and c Reveal answer Fill a bubble to check yourself B Correct answer Explanation Yes, it is correct. Phycocyanin, carotenes and xanthophylls in green algae, phycoerythrin in red algae (rhodophytes) and fucoxanthol in brown algae.