Certified Crop Advisor Practice Exam

Insects that undergo a complete life cycle of egg, larva, pupa, and adult are said to have?

1. Partial metamorphosis

2. Complete metamorphosis

3. Direct development

4. Metagenesis

The correct answer is: Complete metamorphosis

Insects that exhibit a complete life cycle consisting of four distinct stages—egg, larva, pupa, and adult—are classified as having complete metamorphosis. This process is characterized by significant transformation at each stage. The larval stage often looks very different from the adult form and is primarily focused on growth and feeding, while the pupa stage represents a transformative period where the organism undergoes dramatic changes to emerge as a fully formed adult. The complete metamorphosis cycle allows for specialization at different life stages, facilitating diverse adaptations to various ecological niches. This distinction from other life cycles, such as partial metamorphosis, which only involves egg, nymph, and adult stages, underscores the complexity and versatility found within this group of insects. Understanding this life cycle is crucial for pest management and agricultural practices, as it informs strategies for controlling insect populations at various development stages.