What can exacerbate pest resistance in populations?

• A. The use of biological control methods
• B. Over-reliance on a single pesticide class
• C. Increasing crop rotation
• D. Implementing buffer zones

Answer: (B)

The correct choice highlights a significant factor in pest management that can lead to increased resistance in pest populations. Over-reliance on a single pesticide class means that pests are continuously exposed to the same type of chemical, which creates selective pressure on those populations. Pests that possess or develop resistance mechanisms to that particular pesticide will thrive and reproduce, ultimately leading to a population that is predominantly resistant to that chemical.

This situation can make it much more challenging to control these pests in the future and can lead to a cycle in which higher concentrations of pesticide are required over time, further compounding the resistance issue.

In contrast, utilizing biological control methods, increasing crop rotation, and implementing buffer zones are strategies designed to promote biodiversity, disrupt pest life cycles, and reduce dependency on chemical controls. These practices can mitigate resistance development by either introducing natural predators or diversifying the environment, making it harder for pests to adapt to a single control method.