Aerotolerant organisms cannot use oxygen for growth but tolerate its presence. Facultative anaerobes can grow without oxygen but use oxygen if it is present.

Facultative anaerobes are quite flexible, they can survive and metabolise either with or without oxygen.When supplied with oxygen they respire and produce ATP and when there is no oxygen they undergo the fermentation process. Aerotolerant anaerobes on the other hand only 'tolerate' oxygen but do not grow in it, they can only grow and ferment in anaerobic conditions.

Mam anearobe to vo hote ha na jo oxygen ko respiration main use nahi karte ha mam please bataiye main bhut confused hu isme aerobic and anaerobic main

Aerobic means with oxygen, and anaerobic means without oxygen. An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. It may react negatively or even die if free oxygen is present. An aerobic organism or aerobe is an organism that can survive and grow in an oxygenated environment.

Ok mam so in previous answer why you said that the facultative anerobe use oxygen if it is present please answer mam.

A facultative anaerobe is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent. They are flexible. Due to this characteristics, they are named as facultative which means occurring optionally in response to circumstances rather than by nature (capable of but not restricted to a particular function or mode of life).

Ok mam thank you so much😊