Which of the following is an example of a bio | vedclass

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(D) Biofertilizers are organisms that enrich the nutrient quality of the soil. $1$. $Azolla-Anabaena$ is a symbiotic association where the cyanobacter

Vedclass · Accepted Answer

All of the above

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(D) Biofertilizers are organisms that enrich the nutrient quality of the soil. $1$. $Azolla-Anabaena$ is a symbiotic association where the cyanobacterium $Anabaena$ fixes nitrogen for the $Azolla$ fern. $2$. $Mycorrhiza$ is a symbiotic association between fungi and roots of higher plants,which helps in phosphorus absorption. $3$. $Legume-Rhizobium$ symbiosis is a classic example where $Rhizobium$ bacteria fix atmospheric nitrogen in the root nodules of leguminous plants. Since all these examples represent biological agents used to increase soil fertility,the correct answer is $All 	ext{ of the above}$.

Which of the following is an example of a biofertilizer?

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