Which term describes timber subject to decay and attack by fungus?

• A. Dry rot
• B. White rot
• C. Brown rot
• D. Wet rot

Answer: (A)

Fungal decay of timber is the idea being tested. When timber is subject to decay and attack by a fungus, the common term used in building practice is dry rot. This name is used because it is the traditional label for timber altered by fungal decay, and it signals a serious infestation that can spread through timber and cause major structural damage. It helps distinguish this broad issue from other specific decay types or moisture-related conditions: white rot and brown rot describe particular patterns of decay caused by different fungi, while wet rot refers to decay that occurs in persistently damp conditions. The key point is that dry rot is the standard term for timber that has fungal decay affecting its integrity.