Why is direct use of atmospheric nitrogen difficult for organisms?
Answer and explanation
Correct answer: Because the N₂ molecule is very stable and must first be fixed
The governing concept is nitrogen fixation. Atmospheric N₂ contains a strong triple bond, making it chemically stable and difficult for most organisms to use directly. Nitrogen-fixing bacteria, lightning or industrial processes convert it into reactive compounds such as ammonia or nitrates, which plants can assimilate. Option A is correct; the other options falsely describe nitrogen’s presence or identity.
Frequently asked questions
What is the correct answer to this question?
Because the N₂ molecule is very stable and must first be fixed
Why is this the correct answer?
The governing concept is nitrogen fixation. Atmospheric N₂ contains a strong triple bond, making it chemically stable and difficult for most organisms to use directly. Nitrogen-fixing bacteria, lightning or industrial processes convert it into reactive compounds such as ammonia or nitrates, which plants can assimilate. Option A is correct; the other options falsely describe nitrogen’s presence or identity.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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