Which of the following bacterial genera plays an important role in environmental nitrogen cycles?
A) Nitrobacter
B) Azospirillum
C) Rhizobium
D) both Nitrobacter and Rhizobium
E) Nitrobacter, Rhizobium, and Azospirillum

Question

Quizplus · Accepted Answer

Nitrobacter, Rhizobium, and Azospirillum all play roles in the nitrogen cycle. Nitrobacter is involved in nitrification, Rhizobium in nitrogen fixation in symbiosis with legumes, and Azospirillum in nitrogen fixation in association with grasses.

Which of the Following Bacterial Genera Plays an Important Role