Does Anaerobic growth involve the growth of microorganisms with or without presence of air?

• A. With Presence of Air
• B. Without Presence of Air
• C. In High Pressure
• D. At Low Temperature

Answer: (B)

Anaerobic growth means thriving in environments where oxygen is not present. The term describes organisms that either cannot tolerate oxygen or prefer to grow without it, so the correct idea is growth without air. Some microbes are obligate anaerobes and are harmed by oxygen, while others are facultative anaerobes that can grow with or without oxygen. In contrast, having air supports aerobic growth, where oxygen is used for energy. High pressure or low temperature are not defining features of anaerobic growth.