At one time cyanobacteria were called blue-green algae and were included with the algae. However, like bacteria and unlike algae, cyanobacteria are prokaryotes, meaning that they do not have a nucleus. For this reason they were removed from the algae (which are eukaryotes) and put into the bacteria, with all the other prokaryotes. See: http://www.ucmp.berkeley.edu/bacteria/cyanomm.html http://fig.cox.miami.edu/Faculty/Dana/cyano.html
This is because bacteria as a whole are prokaryotic - no nucleus, very different structures for cell membranes and ribosomes, and the list continues. Although aggregations of cyanobacteria function similarly to algae, their cellular and molecular features are very different. This is why taxonomists put them into two separate kingdoms.
The differences between cyanobacteria and algae can be compared to the differences between a koala and a sloth. Both are slow moving, aboreal herbivores; however, a koala is a marsupial and a sloth is a placental mammal. There are major differences between the two animals, even though they superficially act about the same.
All plants are eukaryotic and bacteria including cyanobacteria are prokaryotic
Cyanobacteria. Algae
Cyanobacteria, also known as blue green algae.
The "algae" most people think of as algae are Cyanobacteria, *blue green algae*. By the name of the phylum you can guess that this "algae" is a bacteria, you are right. Scientifically speaking, true algae is only found in the Kingdom Protista, it is not plant, bacteria, fungi, or animal. We call Kingdom Protista the "grab bag kingdom" because it is home to the wierdest organisms that just don't fit well into other kingdoms. An example a true algae is Rhodophyta (red algae) Rhod=Red, Phyta=Algae. But to the lay person, they will mistake most Cyanobacteria for algae, and unless you are a biologist, this is just fine :)
neither. algae, bacteria and fungi are all separate groups of classification
Although cyanobacteria do not have chloroplasts, they do have thylakoid membrane, where photosynthesis occur.
Cyanobacteria is the phylum of bacteria. Often called blue-green algae, it belongs to the bacteria domain and the eubacteria kingdom.
Cyanobacteria. Algae
Cyanobacteria is in the Eubacteria kingdom. It is an algae that makes its own food through photosynthesis and is blue-green in color.
Cyanobacteria, or cyanophyta.
Cyanobacteria, also known as blue green algae.
blue-green algae, blue-green bacteria, and Cyanophyta
Photosynthetic bacteria are called cyanobacteria, such as the blue-green algae found in the oceans. They conduct their photosynthesis on the thylakoids found floating in the cytosol.
Some bacteria, but not all bacteria, have chlorophyll.
Cyanobacteria, also called blue-green algae, are bacteria that photosynthesize but do not have chloroplasts.
Cyanobacteria, also known as blue-green algae, is literally everywhere.
Certain bacteria (i.e. cyanobacteria) and protists (i.e. algae) can also photosynthesize.
Blue-green algae are "cyanobacteria" (SY-ann-oh-bak-TEER-ee-uh).