What is the other name of Cyanobacteria? Explain its different habitats.

Explanation

1. Cyanobacteria are popularly called as Blue green algae or Cyanophyceae.
2. They are photosynthetic, prokaryotic organisms.
Habitats:
1. Most of them are fresh water and few are marine such as Trichodesmium and Dermacarpa. Thichodesmium erythraeum a Cyanobacterium imparts red color to sea (Red sea).
2. Species of Nos toe, Anabaena lead an endophytic life in the corolloid root of Cycas, leaves of aquatic fem Azolla and thallus of homworts like Anthoceros by establishing a symbiotic association and fix atmospheric nitrogen.
3. Members like Gloeocapsa, Nostoc, Scytonema are found as phycobionts in lichen thalli.