Green algae are eukaryotic, whereas cyanobacteria are prokaryotic.
“Green algae” is the common name for Chlorophyta. “Blue-green algae” is the common name for Cyanobacteria.
Eukaryote cells have a nucleus and membrane. Prokaryote cells do not have a nucleus or membrane and lack many of the organelles present in eukaryotes.
For similarities: green algae and blue-green algae are both photosynthetic organisms.
Despite its common name of blue-green algae, cyanobacteria can appear in a number of colors including red. It is thought that the presence of cyanobacteria on the water’s surface is what inspired the name of the Red Sea.
Of interest, scientists from the Aquatic Research Institute, Eawag have subjected algae to a range of silver concentrations to learn more about the cellular processes that occur in the cells. Find out more at CosmeticsDesign-Europe.com.