Inoculation of which one of the following free living bacteria has been reported to increase the yield of rice

Rhizobium

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Azotobacter

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Mycobacterium

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Pseudomonas

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Solution

The correct option is B Azotobacter
Nitrogen-fixing microorganisms are recognized: free-living (non-symbiotic) bacteria, including the cyanobacteria. Anabaena and Nostoc and genera such as Azotobacter, Beijerinckia, and Clostridium and mutualistic bacteria such as Rhizobium, associated with leguminous plants.
So, the correct option is 'Azotobacter'.

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Similar questions

Which of the following is used as biofertilizer?
I. Cyanobacteria
II. Yeast
III. Symbiotic bacteria
IV. Free living bacteria

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