1) Class 2) Class chlorophyceae 
The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. For example the chlorophycean CW clade, and chlorophycean DO clade, are defined by the arrangement of their flagella. Members of the CW clade have flagella that are displaced in a `clockwise` (CW, 1–7 o`clock) direction e.......
(from the article `algae`) Annotated classification
[n] - algae distinguished chiefly by having flagella and a clear green color, their chlorophyll being masked little if at all by other pigments
class Chlorophyceae noun algae distinguished chiefly by having flagella and a clear green color, their chlorophyll being masked little if at all by other pigments