Which type of bacteria are known for their ability to form spores?

Clostridia bacteria are notably recognized for their ability to form spores. This characteristic allows them to survive in harsh environmental conditions, such as extreme heat, desiccation, and exposure to chemicals. The spore formation is a critical survival strategy that enables these bacteria to remain dormant until conditions are favorable for growth.

Unlike aerobic bacteria, which require oxygen for growth, and gram-negative bacteria, which have a specific cell wall structure and can include various types that do not necessarily have spore-forming capabilities, Clostridia are a specific grouping of bacteria that exhibit this unique ability. This makes Clostridia significant in both clinical settings and in the broader context of microbiology, particularly concerning infections and food safety issues.