Question: how are algae classified quizlet?
Answer: Algae are unicellular, filamentous, or multicellular (thallic). ...  Most algae live in aquatic environments. ...  Algae are eukaryotic; most are photoautotrophs. ...  The thallus of multicellular algae usually consists of a stipe, a holdfast, and blades. ...  Algae reproduce asexually by cell division and fragmentation.