KiwiBee printable
Classify microorganism roles
Free printable Grade 6 science worksheet for "Classify microorganism roles" — practice microorganisms. No-prep, print or assign online.
Middle school students sort microorganisms into roles as decomposers, producers, pathogens, and mutualists in this life science worksheet, building a nuanced picture of how microbes function in ecosystems and the human body. Teachers can use it during a microorganisms unit to move students beyond the idea that all microbes are harmful and toward a more accurate, balanced scientific view. The skill connects to ecology, human health, and biotechnology topics across the curriculum.
Learning objectives
- Classify microorganisms by their ecological or biological role
- Distinguish between beneficial, neutral, and harmful microorganism roles
- Explain how each microorganism role affects its environment or host
Answer Key

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