Mold Assessment Technician Practice Exam

Which of the following mold types is primarily associated with toxic effects?

1. Aspergillus niger

2. Chaetomium globosum

3. Stachybotrys chartarum

4. Penicillium chrysogenum

The correct answer is: Stachybotrys chartarum

Stachybotrys chartarum is primarily associated with toxic effects, making it recognized as "black mold." This type of mold produces mycotoxins, which can lead to various health issues, especially in individuals with respiratory conditions, weakened immune systems, or mold allergies. Stachybotrys thrives in damp, cellulose-rich materials, such as wood, paper, and drywall, making it a common concern in water-damaged buildings. The health implications of Stachybotrys chartarum are particularly significant because of its potential to release harmful spores and mycotoxins into the air, which can be inhaled or cause skin irritation upon contact. This mold type is often correlated with severe health symptoms, including respiratory problems, neurological issues, and even immune system suppression. In comparison, the other molds listed, while they can also produce allergens or irritants, do not have the same level of association with serious toxic effects as Stachybotrys. Although Aspergillus niger can cause respiratory issues or opportunistic infections in immunocompromised individuals, and Chaetomium globosum may also contain mycotoxins, the potency and impact of Stachybotrys chartarum in terms of toxicity make it the primary mold