Multiple choice

Which of the following are expected to be the abundant inhabitants of a nitrate and sulfate rich soil naturally depleted for oxygen?

  1. Pseudomonas and Azotobacter

  2. Pseudomonas and Desulfovibrio

  3. Azotobacter and Thiobacillus

  4. Nitrosomonas and Nitrobacter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In an anaerobic environment rich in nitrate and sulfate, microorganisms capable of anaerobic respiration using these alternative electron acceptors will thrive. Pseudomonas species are well-known denitrifiers, and Desulfovibrio species are classic sulfate-reducing bacteria.

Keep practicing — related questions