Plants and Snails
Study the production and use of gases by plants and animals. Measure the oxygen and carbon dioxide levels in a test tube containing snails and elodea (a type of plant) in both light and dark conditions. Learn about the interdependence of plants and animals.
LESSON MATERIALS:
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Student Exploration Sheet
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Exploration Sheet Answer Key
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Teacher Guide
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Vocabulary Sheet
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Assessment Questions
LEARNING OBJECTIVES:
- Use an indicator (brom thymol blue) to measure concentrations of oxygen and carbon dioxide.
- Design controlled experiments to test hypotheses.
- Discover what gases are used and produced by animals.
- Discover what gases are used and produced by plants (in light and dark).
- Explain how animals and plants help each other survive.
VOCABULARY:
- brom thymol blue (BTB), carbon dioxide-oxygen cycle, indicator, interdependence
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