Question

Why is nitrogen fixation such an important step in the nitrogen cycle?

Question 7 options:

Bacteria convert the fixed nitrogen back into N2.


Soil nitrogen is different.


Decomposers need to use NH4+.


Plants can't use nitrogen in the form of N2.

Answer 1

Answer: The correct answer is plants can't use nitrogen in the form of
`N_2`

Step-by-step explanation:

Nitrogen fixation is carried out by a variety of bacteria. These can act as free-living organisms or in symbiotic relation with plants.

Nitrogen fixation is the process in which organisms convert nitrogen in the soil to ammonia which is taken up by the plants. This process is the main source of the nitrogen in the soil which is required by the plants to grow.

Therefore, nitrogen fixation is one of the most important processes on Earth.

Hence, the correct answer is plants can't use nitrogen in the form of
`N_2`