Which of the following processes is involved in nitrogen fixation?
Correct answer: B. Fixation by soil bacteria
- A. Non-symbiotic fixation of nitrogen
- B. Fixation by soil bacteria
- C. Fixation by yeast
- D. All of the above
Explanation
Nitrogen fixation is the conversion of atmospheric nitrogen (N2) into ammonia (NH3). This crucial process is primarily carried out by specialized soil bacteria, either living freely in the soil or in a symbiotic relationship with plants.
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