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.