Match the following:Column-IColumn-II(a) Free | vedclass

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(B) The correct matches are as follows:$(a)$ Free living aerobic nitrogen fixer: $Beijerinckia$ is a free-living aerobic bacterium that fixes nitrogen

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$(a-4), (b-3), (c-2), (d-1)$

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(B) The correct matches are as follows:$(a)$ Free living aerobic nitrogen fixer: $Beijerinckia$ is a free-living aerobic bacterium that fixes nitrogen.$(b)$ Denitrification: $Thiobacillus$ is a denitrifying bacterium that converts nitrates back into nitrogen gas.$(c)$ Free living anaerobic nitrogen fixer: $Anabaena$ (specifically in its heterocysts) can fix nitrogen under anaerobic conditions while living freely.$(d)$ Symbionts: $Frankia$ is a symbiotic nitrogen-fixing bacterium that forms root nodules in non-leguminous plants like $Alnus$.Therefore,the correct sequence is $(a-4), (b-3), (c-2), (d-1)$.

Column-$I$	Column-$II$
$(a)$ Free living aerobic nitrogen fixer	$(1)$ Frankia
$(b)$ Denitrification	$(2)$ Anabaena
$(c)$ Free living anaerobic nitrogen fixer	$(3)$ Thiobacillus
$(d)$ Symbionts	$(4)$ Beijerinckia

Match the following:
Column-$I$ Column-$II$
$(a)$ Free living aerobic nitrogen fixer $(1)$ Frankia
$(b)$ Denitrification $(2)$ Anabaena
$(c)$ Free living anaerobic nitrogen fixer $(3)$ Thiobacillus
$(d)$ Symbionts $(4)$ Beijerinckia

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Match the following:Column-$I$Column-$II$$(a)$ Free living aerobic nitrogen fixer$(1)$ Frankia$(b)$ Denitrification$(2)$ Anabaena$(c)$ Free living anaerobic nitrogen fixer$(3)$ Thiobacillus$(d)$ Symbionts$(4)$ Beijerinckia