The correct answer is ' Yellow-green algae'.
Xanthophyta A phylum of mostly freshwater organisms of the kingdom Protoctista, traditionally known as yellow-green algae, that possess carotenoid pigments (including xanthins), which are responsible for their color, in addition to chlorophylls.
Commonly known as yellow-green algae, the Xanthophyta includes one Class, Xanthophyceae, characterized by the following general features: (1) the photosynthetic pigments consist of chlorophyll-a and -e, β carotene and xanthophylls; of these, β carotene is usually present in fairly high concentrations.
Xanthophyceae is a class comprised of xanthophytes or yellow-green algae. The color is due to the presence of pigments such as xanthophylls and beta carotene. They also have chlorophyll pigments. They have chlorophyll a and c.
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