CMA Mold Identification & Types 3

Question 1

Which mold is classified as a thermophilic organism and can grow at temperatures above 45°C?

Accepted Answer

Aspergillus fumigatus

Answer

Aspergillus fumigatus is thermophilic and can grow at temperatures up to 55°C, making it a concern in compost piles and HVAC systems.

Question 2

In mold taxonomy, what does the term 'xerophilic' mean?

Accepted Answer

Capable of growing at very low water activity

Answer

Xerophilic molds can grow at very low water activity (aw), meaning they tolerate dry conditions better than most fungi.

Question 3

Fusarium species are most commonly associated with which indoor substrate?

Accepted Answer

Carpets and water-damaged flooring materials

Answer

Fusarium is commonly found on water-damaged carpets and flooring and is also an important plant pathogen and emerging human pathogen.

Question 4

What is the primary difference between mold and mildew as used in the field?

Accepted Answer

Mildew typically refers to powdery or downy plant pathogens or surface fungi; mold refers to invasive fungal growth

Answer

In common and professional usage, 'mildew' typically refers to superficial, powdery fungal growth on surfaces or plants, while 'mold' denotes deeper, invasive fungal colonization.

Question 5

Chaetomium is particularly significant in building assessments because it indicates what condition?

Accepted Answer

Prolonged water intrusion or chronic wetting of cellulosic materials

Answer

Chaetomium requires prolonged moisture on cellulosic substrates like drywall paper and cardboard, making its presence a strong indicator of chronic water damage.

(CMA) Certified Mold Assessor Practice Test

(CMA) Certified Mold Assessor Practice Test

CMA Mold Identification & Types 3