The nitrification process requires the mediation of two distinct groups: bacteria that convert ammonia to nitrites (Nitrosomonas, Nitrosospira, Nitrosococcus, and Nitrosolobus) and bacteria that convert nitrites (toxic to plants) to nitrates (Nitrobacter, Nitrospina, and Nitrococcus).

Which bacteria converts nitrates to free nitrogen?

D. Nitrifying bacteria. Hint: This type of conversion comes under the Nitrogen Cycle.An anaerobic bacteria causes the conversion of Nitrates into Nitrogen Gas.

What turns nitrates into nitrites?

Denitrification by bacteria converts nitrates (NO₃⁻) to nitrogen gas (N₂). Nitrification by bacteria converts nitrates (NO₃⁻) to nitrites (NO₂⁻). Nitrogen fixing bacteria convert nitrogen gas (N₂) into organic compounds.