Illinois Pesticide Applicator Practice Test

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Prepare for the Illinois Pesticide Applicator Test. Use flashcards and multiple-choice questions to hone your skills. Each question comes with hints and explanations to help you understand comprehensively. Ensure success with our study resources!

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Which of the following represents an incomplete life cycle of an insect?

Egg, Larva, Adult
Caterpillar, Pupa, Adult
Egg, Nymph, Adult
Egg, Pupa, Adult

The correct answer is: Egg, Nymph, Adult

The incomplete life cycle, also known as hemimetabolism, is characterized by three main stages: egg, nymph, and adult. In this type of life cycle, the nymph stage resembles a smaller version of the adult but does not undergo a significant transformation or a pupal stage as seen in complete life cycles. As the nymph grows, it molts several times, gradually developing into the adult form without the drastic changes associated with complete metamorphosis. In the context of other choices, they represent stages that either include a larval stage, which indicates complete metamorphosis, or contain a pupal stage. Both complete life cycles involve a more complex transformation process, including distinct stages where the insect undergoes dramatic changes in form and function. In contrast, the presence of a nymph in the context of choice C correctly illustrates the simpler, more direct progression that defines an incomplete life cycle.