Differentiate between bacteria and cyanobacteria?

Hint: Cyanobacteria is also known as blue-green algae. They differ from other bacteria as cyanobacteria contain chlorophyll-a, while most bacteria do not contain chlorophyll. Chlorophyll-a is a pigment that gives them their characteristic blue-green color.

Complete answer:
Cyanobacteria- they are also known as Cyanophyta. They are a phylum consisting of both free-living photosynthetic bacteria and endosymbiotic plastids which are seen in the Archaeplastida autotrophic eukaryotes. The plastids exist as a sister group to the free-living Gloeomargarita.

Bacteria- They are a type of biological cell. They comprise a large domain of prokaryotic microorganisms. They are a few micrometers in length and have a number of shapes, ranging from spheres to rods and spirals. They were among the first life forms to appear on Earth, and are present in most of its habitats.



Note: Cyanobacteria are occasionally considered algae, but they are actually bacteria. And the term "algae" is now reserved for eukaryotic organisms. They usually derive their energy through photosynthesis. They lack a nucleus or membrane-bound organelles, like chloroplasts.