. Another name of Phaeophyta is
a. red algae
b. blue algae
c. brown algae
d. green algae
The Phaeophyceae or brown algae, (singular: algA. is a large group of mostly marine multicellular algae, including many seaweeds of colder Northern Hemisphere waters. They play an important role in marine environments both as food, and for the habitats they form.