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Unicellular symbiotic organisms improve yield of legumes by
Option: 1
fixing atmospheric nitrogen without colonising roots of host plant
Option: 2
fixing atmospheric nitrogen and colonising roots of host plant
Option: 3
inducing the host plant to absorb more phosphorus
Option: 4
stimulating the host plant to become tolerant to drought.
Answers (1)
As we have learnt,
Microbes as bio fertilizers -
Cyanobacteria
- wherein
autotrophic microbes widely distributed in aquatic and terrestrial environments many of which can fix atmospheric nitrogen, e.g. Anabaena, Nostoc, Oscillatoria, etc.
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