<prompt> Thermophile bacteria grow at ?20degC20-40deg C40-60degC60-80degC  <response>: Ans. is d i.e., 60-80deg C Temperature requirement of bacteria Bacteria vary in their requirements of temprature for growth. Psychrophilic bacteria grow best at temperature below 20degC Thermophilic bacteria grow best between 55-80degC Mesophilic bacteria grow best between 25-40degC 