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This worksheet explores the surprising relationships cockroaches form with other organisms in their environment. Students learn about mutualism, such as bacteria in a cockroach’s digestive system helping them break down food. They also read about commensalism, where cockroaches benefit from another species without harming it, and parasitism, where other organisms harm cockroaches by feeding on them or laying eggs inside their bodies. The passage shows how cockroaches, despite their reputation, play roles in many types of ecological relationships.

Completing this worksheet helps students classify relationship types within ecosystems using real-world examples. It builds comprehension skills by encouraging students to compare mutualism, commensalism, and parasitism. The reading strengthens scientific vocabulary and deepens understanding of how organisms interact. These skills support future learning in ecology and environmental science.

This worksheet is part of our cockroach and cockroaches worksheet series.