The fixation of atmospheric nitrogen can be carried out by
A) a few species of bacteria.
B) bacteria, fungi, and plants.
C) plants.
D) all eukaryotes.

Question

Quizplus · Accepted Answer

Only a few species of bacteria, such as Rhizobium and Azotobacter, are capable of fixing atmospheric nitrogen. Fungi and plants can form symbiotic relationships with these bacteria to incorporate the fixed nitrogen into their tissues, but they do not carry out nitrogen fixation themselves. Eukaryotes as a whole do not have the ability to fix atmospheric nitrogen.

The Fixation of Atmospheric Nitrogen Can Be Carried Out by