Question

What will be the answer
Options:
i) Electrical nitrogen fixation
ii) O2

i) Biological Nitrogen Fixation
ii)N2

i) Biological Nitrogen Fixation
ii)O2

i) Electrical nitrogen fixation
ii)N2
​

Answer 1

Answer:

biological nitrogen fixation

O2

Answer 2

Answer:

The correct answer is (i) Biological Nitrogen Fixation, (ii) O2.

Explanation:

• Nitrogen is fixed in plants by a process known as biological nitrogen fixation, which uses certain anaerobic bacteria (works in the absence of oxygen).
• With the aid of specific anaerobic bacteria, nitrogen is fixed in plants through a process known as biological nitrogen fixation.
• Only specific prokaryotes, including bacteria and cyanobacteria, are capable of fixing atmospheric nitrogen.
• To catalyze the transformation of atmospheric nitrogen (N2) into ammonia, they use the enzyme nitrogenase (NH3).
• Since nitrogen-fixing bacteria's nitrogenase is extremely sensitive to oxygen, they are referred to as microaerobic bacteria. Oxygen is labile in the enzyme nitrogenase.
• Oxygen will permanently render the enzyme inactive. Therefore, oxygen must be kept away from the nitrogenase enzyme by the microorganisms that fix nitrogen.
• The root nodule's leghemoglobin pigment scavenges free oxygen so that nitrogenase can carry out its nitrogen fixing action undisturbed.

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