Question

The inclusion of atmospheric nitrogen in the soil,in tha from of different nitrogen compound is called​

Answer 1

Explanation:

Certain microorganisms fix atmospheric nitrogen to form ammonia under reductive or microaerophilic conditions. Organisms capable of fixing nitrogen under aerobic conditions include Azotobacter, Azotomonas, Azotococcus, and Biejerinckia. Nitrogen fixation is catalyzed by the enzyme nitrogenase, which is inhibited by oxygen. Typically, these aerobic organisms sequester nitrogenase in compartments that are protected from oxygen.

(9.62)N2+6H++6e−→2NH3

Azotobacter species, present in soil, provide ammonium for plants by fixing atmospheric nitrogen, and some form associations with plant roots. Some facultative anaerobes, such as Bacillus, Klebsiella, Rhodopseudomonas, and Rhodospirillum, fix nitrogen under strict anaerobic conditions. Strict anaerobes, such as Clostridia, can also fix nitrogen under anaerobic conditions. Certain cyanobacteria, such as Anabaena sp., fix nitrogen under aerobic conditions. Lichens are composite, symbiotic organisms made up from of cyanobacteria and fungi. Cyanobacteria provide nitrogen to fungi by fixing atmospheric nitrogen. Rhizobium species are heterotrophic organisms growing in the roots of leguminous plants. Rhizobiums fix atmospheric nitrogen under low-oxygen pressure, and provide ammonium to plants. Rhizobium and Azospirillum are widely used for agricultural purposes and are bioprocess products.