Division Cyanophyta (which is in Kingdom
Monera) contains the cyanobacteria, which are also known as blue-green
algae and cyanophytes. These organisms are one-celled or
colonial prokaryotes that contain
chlorophyll (but not
chloroplasts, which contain the
chlorophyll in true
plants).
Cyanobacteria are autotrophs (they create their own energy via photosynthesis) and reproduce through fission (splitting in two). There are over 7,500 species of cyanobacteria and they are found in many environments: damp soil and rocks, fresh water, and salt water.