OPM Termite Practice Exam

What is a characteristic behavior of subterranean termites when eating?

1. Eat in circular patterns

2. Eat with the grain in linear directions

3. Only eat dry wood

4. Consume wood indiscriminately

The correct answer is: Eat with the grain in linear directions

Subterranean termites exhibit the characteristic behavior of eating wood with the grain in linear directions. This behavior is particularly effective as it allows them to efficiently extract cellulose from the wood fibers, which is their main source of nutrition. By following the grain, they can take advantage of the structural integrity of the wood while minimizing their exposure to potential predators and environmental threats. Additionally, this linear feeding pattern results in distinctive tunneling shapes visible in infested materials. Their preference for the grain is a reflection of their evolutionary adaptation to thrive in their natural habitats, where they often inhabit damp and decaying wood, making it easier to consume the surrounding plant material. In contrast, the other options do not accurately represent the feeding behavior of subterranean termites. They do not eat in circular patterns; instead, that would be indicative of different insect feeding habits. They do not solely consume dry wood, as they typically prefer moist environments where wood is decaying. Lastly, while they might appear to consume a variety of wood types, their feeding is not indiscriminate. They focus on wood with higher cellulose content, which is essential for their survival.