Multiple choice

Match the following columns:

Organism Role/Activity
a. Nitrosomonas 1. Nitrification
b. Nitrobacter 2. Denitrification
c. Pseudomonas 3. Ammonification

  1. a - 1, b - 2, c - 3

  2. a - 2, b - 3, c - 1

  3. a - 3, b - 1, c - 2

  4. a - 2, b - 1, c - 3

  5. a - 3, b - 2, c - 1
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer. Nitrosomonas are nitrifying bacteria and their role is to change ammonia into nitrites. They conduct ammonification. Nitrobacter change nitrites into nitrates. They conduct nitrification. Pseudomonas are denitrifying bacteria and change nitrates into free nitrogen.

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