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प्रश्न
Which of the following symbiotic microorganisms is nitrogen-fixing?
विकल्प
Azotobacter
Rhizobium
Clostridium
Cyanobacteria
MCQ
उत्तर
Rhizobium
Explanation:
Rhizobium is a bacterium that aids in the nitrogen fixation process.
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Microbes as Biofertilizers
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