Which of the following is an incorrect pair?

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(D) $1$. $Trichoderma$ is a free-living fungus used as a biocontrol agent against several plant pathogens.$2$. $Rhizobium$ is a symbiotic bacterium th

Vedclass · Accepted Answer

Glomus - Symbiotic $N_2$-fixer

Vedclass · Answer

(D) $1$. $Trichoderma$ is a free-living fungus used as a biocontrol agent against several plant pathogens.$2$. $Rhizobium$ is a symbiotic bacterium that fixes atmospheric nitrogen in the root nodules of leguminous plants.$3$. $Azotobacter$ is a free-living bacterium that fixes atmospheric nitrogen in the soil.$4$. $Glomus$ is a genus of arbuscular mycorrhizal fungi $(AMF)$. These fungi form a symbiotic association with plant roots (mycorrhiza) to help in phosphorus absorption, not nitrogen fixation. Therefore, the pair $Glomus - 	ext{Symbiotic } N_2	ext{-fixer}$ is incorrect.

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