UACE Biology Item 5: Pest Resurgence & Resistance #UACE #Biology

Welcome to BiologyKingUg — Learn, Understand, Excel! In this lesson, we analyse UACE A-Level Biology Item 5, focusing on pest control, pest resurgence and the evolution of pesticide resistance in moths that attack cabbage crops. We examine how repeated and increased pesticide application can change moth populations, especially when pesticides kill susceptible moths while resistant individuals survive and reproduce. Topics discussed in this video: Pest control: The use of pesticides to control moths that damage cabbage crops. Pest resurgence: Why pest populations may increase again after pesticide application. Pesticide resistance: How resistance alleles become more common in moth populations following repeated pesticide use. Natural selection: Why resistant moths are more likely to survive pesticide application and pass resistance alleles to their offspring. Non-target effects: How pesticides may also kill predatory beetles that naturally feed on moths. Food-chain interactions: How killing natural predators can reduce biological control and allow pest populations to recover. Susceptible versus resistant moths: Understanding differences in survival and reproductive success. Data analysis and evaluation: How to interpret trends and develop scientifically supported answers in UACE Biology examinations. Learn how pesticide use can unintentionally encourage resistance and disrupt natural predator–prey relationships, making pest management less effective over time. Subscribe to BiologyKingUg for more UACE Biology past-paper discussions, data analysis, biological concepts and examination tips. #UACEBiology #AlevelBiology #BiologyKingUg #PesticideResistance #NaturalSelection