Cyanobacteria play a tremendous ecological role. Among other things, they are responsible for

Question

Quizplus · Accepted Answer

Cyanobacteria fix nitrogen, which means they convert atmospheric nitrogen into a usable form of nitrogen for other organisms. They also participate in the carbon cycle by converting carbon dioxide into organic compounds, which can be used as a source of energy by other organisms. Therefore, they play a crucial role in providing nutrients for other organisms in the ecosystem.

Option A is incorrect because cyanobacteria are known for their oxygen-producing abilities through photosynthesis.

Option B is incorrect because cyanobacteria do not convert nitrogen in the soil to nitrogen gas, but rather atmospheric nitrogen to a usable form of nitrogen.

Option D is incorrect because while cyanobacteria produce antibiotics, they do not have a significant role in killing harmful bacteria in soil.

Option E is partially correct because cyanobacteria are known to produce some types of antibiotics, but the statement is too broad.

Cyanobacteria Play a Tremendous Ecological Role