Biology · Mineral Nutrition
Which statement best explains why higher plants cannot directly assimilate atmospheric dinitrogen (N2)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1N2 is extremely non-polar and completely insoluble in biological fluids
- 2Plants lack the nitrogenase enzyme complex required to break the strong N≡N triple bond✓
- 3N2 is rapidly oxidized into toxic gases upon entering plant leaves
- 4Stomata actively block gaseous nitrogen from entering the leaf tissue
Correct answer
Plants lack the nitrogenase enzyme complex required to break the strong N≡N triple bond
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