Why is brown algae considered a protist?

Brown algae was classified as kingdom protista because they are non-plant photoautotrophic eukaryotes. I like this six kingdom diagram below because it shows the relationship of red algae and brown algae, to green algae and plants, while depicting the fuzzy nature of what makes up the kingdom protista. read more

those categories don't reflect the evolutionary history of protists Most single-celled eukaryotes are currently classified as _____. read more

Through all of this, though, the algae have remained among the protists. There is actually good reason for this. One of the defining characteristics of the Protista is that, unlike animals or plants, its members do not contain more than one clearly differentiated functional tissues. read more