Which of the following will not survive in the presence of oxygen?

Explanation

Obligate anaerobes are organisms that cannot survive in the presence of oxygen as they lack the necessary enzymes to process it, making them vulnerable to its toxic effects. They rely on anaerobic respiration or fermentation for energy. Other options like facultative anaerobes can survive in both conditions, while obligate aerobes and aerotolerant anaerobes can survive in the presence of oxygen, making them incorrect choices for this question.