What is true for cyanobacteria?
Oxygenic with nitrogenase
Oxygenic without nitrogenase
Non oxygenic with nitrogenase
Non oxygenic without nitrogenase
The correct option is A Oxygenic with nitrogenase
Blue green algae (BGA) also known as cyanobacteria are photosynthetic prokaryotes. Many of them form symbiotic association with fungi and green plants. According to Bergey's classification they are oxygenic phototrophic bacteria. Many members have the ability to fix the atmospheric nitrogen in the soil. BGA are the source of food to several aquatic animals Spirulina is cultivated for a source of protein rich animal feed.