A) Rhizobium
B) Aspergillus
C) Penicillium
D) Streptococcus
Correct Answer: A
Solution :
Nif gene is present in Rhizobium. It is responsible for the synthesis of enzyme nitrogenase which can fix atmospheric nitrogen. Rhizobium leguminosarum bacteria is found symbiotically associated in the root nodules of leguminous plant.
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