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.

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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

LESSON MATERIALS:

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