Approximately what percentage of all insect and insect-like species feed on other insects?

The correct answer highlights the substantial role that predatory insects play within ecosystems, comprising about 50% of all insect and insect-like species that utilize other insects as a food source. This significant percentage reflects the intricate food web relationships in nature, where various species depend on other insects for their survival.

Predatory insects, such as ladybugs, dragonflies, and praying mantises, are crucial in maintaining the balance of ecosystems by controlling pest populations and contributing to the overall health of their habitats. These predatory behaviors not only support the survival of these insect species but also play a vital role in agriculture and gardening by naturally managing pest populations, thereby reducing the need for chemical interventions.

Understanding the prevalence of insectivorous species offers insights into pest management strategies and the importance of biological controls in sustainable agriculture practices, which are essential topics for anyone preparing for the Kansas Pesticide Pro Exam.