Which of the following pairs is correct for b | vedclass

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(A) Biofertilizers are organisms that enrich the nutrient quality of the soil.$Azolla$ is a small aquatic fern that has a symbiotic relationship with

Vedclass · Accepted Answer

Azolla and $BGA$

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(A) Biofertilizers are organisms that enrich the nutrient quality of the soil.$Azolla$ is a small aquatic fern that has a symbiotic relationship with the cyanobacterium $Anabaena$ $azollae$ (a type of $BGA$ or Blue-Green Algae).This association helps in nitrogen fixation,making $Azolla$ and $BGA$ a correct pair for biofertilizers.$Rhizobium$ forms a symbiotic association with leguminous plants,not grass.$Nostoc$ can fix nitrogen,but it is not typically paired with legumes as a primary biofertilizer source in this context.$Salmonella$ and $E. coli$ are generally pathogenic or commensal bacteria,not biofertilizers.

Which of the following pairs is correct for biofertilizers?

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