Atmospheric Nitrogen Can Be Fixed by Nitrogen-Fixing Bacteria

question 22

Multiple Choice

Atmospheric nitrogen can be fixed by nitrogen-fixing bacteria.Arrange the following forms of nitrogen from the atmospheric N stage to the final form that enters the roots.
1) Ammonia
2) Nitrogen gas
3) Ammonium ion
4) Nitrite
5) Nitrate

• A)1,2,3,4,5
• B)2,1,3,5,4
• C)2,1,5,4,3
• D)2,1,3,4,5

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