Classify organ systems
Free printable Grade 6 science worksheet for "Classify organ systems" — practice animal systems. No-prep, print or assign online.
Middle-school students classify organ systems in this life-science worksheet, sorting major body systems by their primary function and identifying the organs that belong to each. Teachers can use it as an introduction to a human-systems unit or as a review activity before students explore how systems interact to maintain homeostasis. Accurate classification of organ systems builds the conceptual map students need for more advanced biology topics.
Learning objectives
- Name the major organ systems and identify the organs in each
- Classify organs by the body system to which they belong
- Describe the primary function of each organ system
Answer Key
How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- 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.
Frequently asked questions
Is the “Classify organ systems” worksheet free?
Yes. “Classify organ systems” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for Middle School (ages 11–14), covering Animal systems.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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