CDFA Pest Prevention Plant Regulation Practice Exam

Where do Japanese Beetle larvae primarily operate?

1. on the fruit of host plants

2. on the roots of plants in the soil

3. on the leaves and stems of host plants

The correct answer is: on the fruit of host plants

The correct answer identifies the primary habitat of Japanese Beetle larvae, which is the roots of plants in the soil. Japanese Beetle larvae, also known as grubs, develop underground where they feed primarily on the roots of grasses and other plants. This is crucial for their growth and development before they emerge as adult beetles. Understanding the lifecycle of the Japanese Beetle is essential because the larvae can cause significant damage to the plant’s root system, leading to reduced plant health and vitality. This information highlights the importance of monitoring the soil environment and the plant species present in an area susceptible to these pests. Addressing the management of these larvae in the soil is key to preventing and controlling potential damage in gardens and agricultural settings.