Tennessee Wastewater Operator Practice Exam

What is the role of facultative bacteria in pond systems?

1. They only operate anaerobically

2. They perform photosynthesis

3. They can thrive in both aerobic and anaerobic conditions

4. They are primarily responsible for sludge digestion

The correct answer is: They can thrive in both aerobic and anaerobic conditions

Facultative bacteria play a crucial role in pond systems as they are capable of thriving in both aerobic and anaerobic environments. This versatility allows them to adapt to varying conditions within the pond, promoting efficient waste breakdown and nutrient cycling. In aerobic conditions, these bacteria utilize oxygen to degrade organic matter, while in anaerobic conditions, they can switch to fermentation or anaerobic respiration processes. This ability to function under different oxygen levels helps stabilize the ecosystem of the pond, ensuring that decomposition continues even when oxygen levels fluctuate. Such adaptability is essential for maintaining water quality and supporting the overall health of the aquatic environment.