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प्रश्न
One of the free-living anaerobic nitrogen-fixer is _________.
विकल्प
Azotobacter
Beijerinckia
Rhodospirillum
Rhizobium
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उत्तर
One of the free-living anaerobic nitrogen-fixer is Rhodospirillum.
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संबंधित प्रश्न
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