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Classify protists
Free printable Grade 6 science worksheet for "Classify protists" — practice microorganisms. No-prep, print or assign online.
Grades 6–8 Life Science students classify protists in this challenging middle-school worksheet, distinguishing among the diverse microorganisms that make up this kingdom based on their characteristics and behaviors. Teachers can use it during a Microorganisms unit to help students organize a difficult and varied group of organisms in a systematic way. It suits structured review, science notebook completion, or preparation for a unit assessment.
Learning objectives
- Classify protists into major groups based on shared characteristics
- Distinguish protists from bacteria, fungi, plants, and animals
- Explain the ecological roles of different types of protists in aquatic and terrestrial environments
Answer Key

How to use this worksheet
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- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
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