Refer to the figure above and then answer the question that follows.
-Which of the following sequences represents the numbered steps in the nitrogen cycle?
A) nitrifying bacteria, assimilation into plants, decomposition by bacteria and fungi, nitrogen fixation, denitrifying bacteria
B) decomposition by bacteria and fungi, assimilation into plants, denitrifying bacteria, nitrogen fixation, nitrifying bacteria
C) nitrogen fixation, assimilation into plants, decomposition by bacteria and fungi, nitrifying bacteria, denitrifying bacteria
D) nitrogen fixation, assimilation into plants, denitrifying bacteria, decomposition by bacteria and fungi, nitrifying bacteria

Question

Refer to the figure above and then answer the question that follows.
-Which of the following sequences represents the numbered steps in the nitrogen cycle?
A) nitrifying bacteria, assimilation into plants, decomposition by bacteria and fungi, nitrogen fixation, denitrifying bacteria 
B) decomposition by bacteria and fungi, assimilation into plants, denitrifying bacteria, nitrogen fixation, nitrifying bacteria 
C) nitrogen fixation, assimilation into plants, decomposition by bacteria and fungi, nitrifying bacteria, denitrifying bacteria 
D) nitrogen fixation, assimilation into plants, denitrifying bacteria, decomposition by bacteria and fungi, nitrifying bacteria

Quizplus · Accepted Answer

The nitrogen cycle starts with nitrogen fixation (conversion of atmospheric nitrogen into a form usable by plants), followed by assimilation into plants, then decomposition by bacteria and fungi (breaking down organic matter and returning nitrogen to the soil), next nitrifying bacteria convert ammonia into nitrates, and finally, denitrifying bacteria convert nitrates back to nitrogen gas, completing the cycle.

Refer to the Figure Above and Then Answer the Question