Question

In whose presence the bacteria do not fix nitrogen

Answer 1

The process of nitrogen-fixation by bacteria does not take place in the presence of Elemental form of oxygen.

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Answer 2

Answer:

Many heterotrophic bacteria live in the soil and fix significant levels of nitrogen without the direct interaction with other organisms. Examples of this type of nitrogen-fixing bacteria include species of Azotobacter, Bacillus, Clostridium, and Klebsiella.

Explanation:

Presence of Cyanobacteria Anabaena and Nostoc are two types of bacteria that allow nitrogen fixing but increase of CO2 reduces the function of nitrogen fixation.