What is the Methods of classification algae?

Question

i mean by this question the tools or methods of classification of algae not the classification.

Rating methods algae

Answer 1

The tools are basically a microscope as the classification is based on the chloroplasts form and function, as well as some other cell organs. See the below link.

Answer 2

By the color of the dominant pigment.The phylum Rhodophyta consists of the red algae. The 1,500 species of brown algae are the members of the phylum Phaeophyta. The phylum Chlorophyta is known as the green algae. Then there are strays, the dinoflagellates.