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Explain the process of ntrogen fixation. |
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Answer» Solution :Nitrogen is required for plants and animals to synthesizeproteins. Free nitrogen cannot be assimilated by plants. Hence the nitrogen presient in the atmosphere is converted into nitrogen compounds which can be easily assimilated by plants. The PROCESS of coonversion of atmopheic into nitrates is called nitrogen fixation. Duringlightening `N_(2)` combines with `O_(2)` to FORM NO which further rects with `O_(2)` to form `NO_(2)`. This gas dissolves in the water droplets of clouds and form `HNO_(3)` . During PRECIPITATION it reaches soil and reacts dissolves in the water droplets of clouds and form correponding nitrotes, these nitrates can be assimilated by plants. `N_(2)+O_(2)to2NO` `2NO+O_(2)to2NO_(2)` `4NO_(2)+2H_(2)O+O_(2)to4HNO_(3)` `4HNO_(3)+MCO_(3)toM(NO_(3))_(2)+CO_(2)+H_(2)O` Leguminous plants contain symbiotic bacteria in their root nodules which absorb atmospheric nitrogen and convert in into verious compounds of nitrogen. These compounds are easily assimilated by plants and also the soil BECOMES enriched with nitrogen compounds. |
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