Georgia Pesticide Applicators Practice Exam

Weeds are harmful to desirable plants because they can:

1. Enhance pollination

2. Compete for essential resources

3. Attract beneficial insects

4. Improve soil health

The correct answer is: Compete for essential resources

Weeds are harmful to desirable plants primarily because they compete for essential resources such as water, nutrients, and sunlight. This competition can inhibit the growth of desirable plants, leading to reduced yields and overall plant health. Weeds can quickly dominate an area, especially if they are aggressive growers or if conditions favor their growth. In contrast, the other options do not accurately reflect the negative impact of weeds on desirable plants. Enhancing pollination and attracting beneficial insects are generally positive effects associated with some plants, but not weeds in the context of their relationship with desirable crops. Similarly, while certain plants can improve soil health, weeds often do not contribute positively in this aspect, as they compete rather than contribute to the wellbeing of the garden ecosystem. Thus, the competition for essential resources is the key reason why weeds pose a threat to desirable plants.