The color in Phaecophyceae depends on the amount of xanthophyll and fucoxanthin. HomeAlgae MCQsThe color in Phaecophyceae depends on the amount of xanthophyll and fucoxanthin. Share your love WhatsApp Facebook Telegram Twitter Pinterest Q. The color in Phaecophyceae depends on the amount of xanthophyll and fucoxanthin. TrueFalse Answer: True