Organisms that ignore oxygen and grow equally well in its presence or absence are called

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Organisms that grow equally well in the presence or absence of oxygen are called aerotolerant. They do not utilize oxygen for growth, but they are not harmed by it either. Facultative anaerobes can use oxygen if it is present but can also grow without oxygen. Microaerophiles require oxygen but only at low concentrations. Anoxygenic organisms do not use oxygen for growth and may even be inhibited by its presence.

Organisms That Ignore Oxygen and Grow Equally Well in Its