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Gas Exchange in Organisms

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Gas Exchange Worksheet

Gas Exchange in Living Organisms 🫁

1. Understanding Gas Exchange 🌬️

What happens when you hold your breath? Explain why we need to breathe:

2. Key Terms Matching 📝

Alveoli
Tiny air sacs in lungs where gas exchange occurs
Gills
Breathing organs used by fish
Spiracles
Breathing holes in insects

3. Compare Gas Exchange Systems 🔄

🫁 👉 🩸 👉 💪

Explain how oxygen moves from the air to your muscles:

4. True or False ⭕

Circle the correct answer for each statement:

1. Diffusion moves gases from high to low concentration

True
False

2. Fish can breathe air like humans

True
False

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