All of the following are mechanisms that provide an anoxic environment for nitrogen fixation in cyanobacteria EXCEPT
A) formation of heterocysts.
B) formation of chlorosomes.
C) temporal separation of photosynthesis and nitrogen fixation.
D) accumulation of large aggregates of cells.
E) symbiotic associations with fungi or plants.

Question

Quizplus · Accepted Answer

Chlorosomes are light-harvesting organelles found in green photosynthetic bacteria, not in cyanobacteria. Therefore, chlorosomes cannot provide an anoxic environment for nitrogen fixation in cyanobacteria.

All of the Following Are Mechanisms That Provide an Anoxic