MICROANATOMY

Detailed explanation-1: -Blue-green algae (cyanobacteria) are a group of prokaryotic, autotrophic microorganisms that contain the photosynthetic pigments (chlorophyll and phycocyanin).

Detailed explanation-2: -Blue-green algae are also known as Cyanobacteria and exhibit prokaryotic nature.. Bacteria are unicellular, prokaryotic organisms and belong to the kingdom Monera. Algae are primitive unicellular or multicellular eukaryotic organisms and are placed in the kingdom Protista. Thus, Blue-green algae is a bacteria.

Detailed explanation-3: -Cyanobacteria are photosynthetic blue green algae with prokaryotic structure. They are members of monera. They are called blue-green algae because they are aquatic and photosynthetic. They are green due to presence of chloroplasts.