Hard capsules known as bacterial spores are formed by certain bacteria that enable them to resist prolonged exposure to heat.
Explanation:
The spores of the bacteria is very hard, resistant protective structures, which is generally dormant in nature. Any adverse environmental conditions such as heat triggers formation of spores by certain bacteria. This spore protect the entire bacteria from adverse condition, so that the bacteria may survive in heat or high temperature. The heat resistant bacteria often exhibit formation of spores.
