2. Ecology
Nitrogen Cycle — Quiz
Test your understanding of nitrogen cycle with 5 practice questions.
Practice Questions
Question 1
What is the main form of nitrogen that most plants can absorb from the soil?
Question 2
Which process converts atmospheric nitrogen into compounds that living organisms can use?
Question 3
Which group of organisms is most closely associated with nitrogen fixation in legume root nodules?
Question 4
What is nitrification?
Question 5
Which process returns nitrogen from soil nitrate to the atmosphere?