Biofertilizers are organisms that enrich the nutrient quality of the soil. Which of the following can be used as biofertilisers ?
A
Nitrogen fixing cyanobacteria
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B
Nitrogen fixing bacteria
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C
Mycorrhizae
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D
All of these
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Solution
The correct option is D All of these
Nitrogen fixing cyanobacteria, Nitrogen fixing bacteria and mycorrhizae all can be used as biofertilisers as they all enrich the nutrient quality of the soil.