The process of conversion of soil nitrates into free ${{\rm{N}}_{\rm{2}}}$ is called (I) and is carried out by bacteria (II)

Which of the following gene is responsible for biological nitrogen fixation?

Number of ATP required for the formation of $4N{H_3}$ molecules via symbiotic nitrogen fixation is

Which of the following microorganisms are primarily responsible for the conversion of nitrite to nitrate in the soil?

Enzyme involved in nitrogen fixation?

Which of the following forms nitrogen-fixing nodules on the roots of Alnus?

The process of conversion of ammonia to nitrite is called:

Anabaena, which is extensively used in rice cultivation, forms symbiotic association with

Which of the following plant with nodule containing filamentous nitrogen – fixing micro – organism?

Free living nitrogen fixing bacteria are

Nitrosomonas and Nitrococcus are involved in