The members of Phaeophyceae are commonly called
a)	Green-algae	b)	Blue algae	c)	Brown algae	d)	Golden algae

(c)

Gk; Phaios = brown, Phyton = plants,

Phaeophyceae cell contains more than one parietal chromatophores. The chromatophores contain chlorophyll-a and c -and -carotenes and xanthophylls. Besides, they contain large amount of brown coloured xanthophyll-fucoxanthin, which masks the green colour of chlorophylls and that is why these algae appear brown in colour