Cyanobacteria

Question

Cyanobacteria
A) Only occur as single cells
B) Are capable of nitrogen fixation
C) Are closely related to fungi
D) Are filamentous in shape, unlike the fungi

Accepted Answer

Cyanobacteria are capable of nitrogen fixation, which means they can convert atmospheric nitrogen into a form that is usable by living organisms. This is a key process in the nitrogen cycle and is not a capability of all bacteria. Cyanobacteria can exist as single cells or in colonies that form filaments, sheets, or hollow balls, not exclusively as single cells or filamentous shapes. They are not closely related to fungi; instead, they are a group of bacteria.