Question

Fermentation is carried out by

• A. All bacteria
• B. All fungi
• C. Some bacteria and some fungi
• D. All micro-organisms

Answer 1

The correct option is C Some bacteria and some fungi

Fermentation is incomplete oxidation of food substances into alcohol and lactic acid with the small amount of energy being released. Both lactic acid and ethanol fermentation do not produce oxygen. It is carried out by anaerobic bacteria and fungi. Aerobic bacteria and fungi carry out aerobic respiration. Thus, the correct answer is option C.