Use the following figure to answer the question.

Consider the global nitrogen cycle depicted in the figure. What is the limiting portion of the cycle for plants?
A) industrial nitrogen fixation
B) nitrogen lost to the atmosphere
C) internal nitrogen cycling in the oceans
D) nitrogen fixation by bacteria

Question

Use the following figure to answer the question.

Consider the global nitrogen cycle depicted in the figure. What is the limiting portion of the cycle for plants?
A) industrial nitrogen fixation 
B) nitrogen lost to the atmosphere 
C) internal nitrogen cycling in the oceans 
D) nitrogen fixation by bacteria

Quizplus · Accepted Answer

Nitrogen fixation by bacteria is the limiting portion of the cycle for plants because atmospheric nitrogen cannot be directly used by plants and must be converted into a usable form by nitrogen-fixing bacteria. Without this process, plants would be unable to access a sufficient amount of nitrogen to support their growth and development.

Use the Following Figure to Answer the Question