The common nitrogen-fixer in paddy fields is

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(B) $Azospirillum$ is a nitrogen-fixing bacterium that forms a loose association with the roots of various plants,including paddy ($Oryza$ $sativa$).I

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Azospirillum

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(B) $Azospirillum$ is a nitrogen-fixing bacterium that forms a loose association with the roots of various plants,including paddy ($Oryza$ $sativa$).It is commonly used as a biofertilizer in paddy fields.Inoculation of paddy fields with $Azospirillum$ helps in increasing the crop yield and reduces the requirement for chemical nitrogen fertilizers.

Column-$I$	Column-$II$
$(a)$ Azospirillum	$(1)$ Symbiotic bacteria
$(b)$ Cyanobacteria	$(2)$ Free-living bacteria
$(c)$ Rhizobium	$(3)$ Mycorrhiza
$(d)$ Glomus	$(4)$ Autotrophic microbe

Similar Questions

The aquatic fern which is an excellent biofertilizer is ......

Which aquatic fern is an excellent biofertilizer?

Match the following columns:

Column-$I$ Column-$II$

$(a)$ Azospirillum $(1)$ Symbiotic bacteria

$(b)$ Cyanobacteria $(2)$ Free-living bacteria

$(c)$ Rhizobium $(3)$ Mycorrhiza

$(d)$ Glomus $(4)$ Autotrophic microbe

The common nitrogen fixer found in paddy fields is . . . . . . .

Which of the following is not a biofertilizer?

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