Question

What is the importance of cyanobacteria? a. photosynthesis d. both (a) and (b) b. nitrogen fixation e. all of the above c. disease formation

Answer 1

Answer:

Cyanobacteria are important in the nitrogen cycle.

They are one of very few groups of organisms that can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia. It is these "fixed" forms of nitrogen which plants need for their growth, and must obtain from the soil.