Free-living bacteria that perform nitrogen fi | vedclass

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(B) Nitrogen fixation is the process of converting atmospheric nitrogen $(N_2)$ into ammonia $(NH_3)$.Free-living nitrogen-fixing bacteria,such as $Az

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Soil

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(B) Nitrogen fixation is the process of converting atmospheric nitrogen $(N_2)$ into ammonia $(NH_3)$.Free-living nitrogen-fixing bacteria,such as $Azotobacter$ and $Beijerinckia$,are aerobic microbes that live freely in the soil.These bacteria fix atmospheric nitrogen independently without forming symbiotic associations with plants.In contrast,root nodules are associated with symbiotic nitrogen-fixing bacteria like $Rhizobium$.Therefore,the correct answer is soil.

Free-living bacteria that perform nitrogen fixation are found in .........

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