1.

Which is the first stable product of nitrogen fixation?(a) N2(b) NH3(c) NH4^+(d) NO3^–The question was posed to me in an online interview.The doubt is from Mineral Nutrition topic in section Mineral Nutrition of Biology – Class 11

Answer» CORRECT answer is (b) NH3

The best explanation: NH3 is the first STABLE product of nitrogen fixation. N2 is the form in which nitrogen naturally exists. NO3^– is the form of nitrogen taken up by the plants. NH4^+ is the toxic form of nitrogen which gets ACCUMULATED in plants.


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