Indoor Air sciences CSMI Practice Exam

Xerophilic mold thrives in conditions of:

1. Low water activity

2. Cooler temperature

3. Warmer temperature

4. High water activity

The correct answer is: Low water activity

Xerophilic molds are specialized organisms that can thrive in environments with low water activity levels. These molds have adapted to survive in dry conditions where moisture is limited, which is why they are commonly found in places like dried foods, seeds, or materials with low moisture content. Their ability to endure and grow in such environments allows them to outcompete other types of fungi that require higher moisture levels for growth. Consequently, the defining characteristic of xerophilic molds is their resilience to low water activity, making this choice the most appropriate answer for the conditions under which they thrive. The other options don't accurately describe the ideal conditions for xerophilic molds. Cooler or warmer temperatures may influence fungal growth in general, but xerophilic molds are specifically adapted to low water availability rather than temperature extremes. High water activity is conducive for most molds and fungi, but it is not applicable to xerophilic types, which prefer arid conditions.