In which of the following crops is BGA (Blue- | vedclass

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(D) $BGA$ (Blue-Green Algae),such as $Anabaena$ and $Nostoc$,are prokaryotic organisms that have the ability to fix atmospheric nitrogen.In paddy ($Or

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Paddy

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(D) $BGA$ (Blue-Green Algae),such as $Anabaena$ and $Nostoc$,are prokaryotic organisms that have the ability to fix atmospheric nitrogen.In paddy ($Oryza$ $sativa$) fields,$BGA$ serves as an important biofertilizer.It adds organic matter to the soil and increases the fertility of the paddy fields by fixing nitrogen,which is essential for the growth of rice plants.

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

In which of the following crops is $BGA$ (Blue-Green Algae) primarily used as a biofertilizer?

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Farmers have reported $50\%$ higher yield of rice by using which biofertilizer?

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Which of the following is a group of blue-green algae that acts as a 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

In which fields are $Cyanobacteria$ used as biofertilizers?

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