Which of the following statements is true?

The process of nitrogen fixation by bacteria does not require oxygen.

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The process of nitrogen fixation by bacteria requires oxygen.

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Presence or absence of oxygen doesn't affect the process of nitrogen fixation.

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None of the above.

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Solution

The correct option is A The process of nitrogen fixation by bacteria does not require oxygen.
Oxygen which serves as a life giving elixir to most life forms, is actually poisonous to few other life forms. In the presence of elemental oxygen, the process of nitrogen fixation do not take place at all.

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Which of the following statements is true?

The correct option is A The process of nitrogen fixation by bacteria does not require oxygen.Oxygen which serves as a life giving elixir to most life forms, is actually poisonous to few other life forms. In the presence of elemental oxygen, the process of nitrogen fixation do not take place at all.