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One of the free-living anaerobic nitrogen-fixing bacteria is
One of the free-living anaerobic nitrogen-fixing bacteria is
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Solution
The correct option is C Rhodospirillum
Plants do not directly absorb atmospheric nitrogen. In nature a nitrogen cycle is operational which continuously shuttles nitrogen between the living and non living components of ecosystem. Nitrogen fixation is the process of converting inert atmospheric nitrogen into utilisable compounds like nitrate and ammonia. In nature a variety of organisms carry out the process of nitrogen fixation. Azotobacter and Beijerinckia are aerobic free living nitrogen fixing organisms. Rhodospirillum is another free living nitrogen fixing bacteria. It is a facultative anaerobe, it can therefore use alcoholic fermentation under low oxygen conditions or use aerobic respiration in aerobic conditions. Rhizobium is symbiotic nitrogen fixer found in the root nodules of legume plants.
Plants do not directly absorb atmospheric nitrogen. In nature a nitrogen cycle is operational which continuously shuttles nitrogen between the living and non living components of ecosystem. Nitrogen fixation is the process of converting inert atmospheric nitrogen into utilisable compounds like nitrate and ammonia. In nature a variety of organisms carry out the process of nitrogen fixation. Azotobacter and Beijerinckia are aerobic free living nitrogen fixing organisms. Rhodospirillum is another free living nitrogen fixing bacteria. It is a facultative anaerobe, it can therefore use alcoholic fermentation under low oxygen conditions or use aerobic respiration in aerobic conditions. Rhizobium is symbiotic nitrogen fixer found in the root nodules of legume plants.
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