Nitrogen fixation is a process that makes nitrogen available to plants and is carried out by _______________
A)volcanic eruptions
B)mutualistic and free-living bacteria
C)nitrogen gas dissolving in fresh water and in the ocean
D)parasitic bacteria
E)plants during photosynthesis

Question

Nitrogen fixation is a process that makes nitrogen available to plants and is carried out by  _______________
A)volcanic eruptions
B)mutualistic and free-living bacteria
C)nitrogen gas dissolving in fresh water and in the ocean
D)parasitic bacteria
E)plants during photosynthesis

Quizplus · Accepted Answer

Nitrogen fixation is primarily carried out by mutualistic bacteria, such as those in the genus Rhizobium, and free-living bacteria, such as those in the genus Azotobacter, which convert atmospheric nitrogen into forms that plants can use.

Nitrogen Fixation Is a Process That Makes Nitrogen Available to Plants