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2.2 Communities and ecosystems

Experiments

Here are experiments our science specialists have selected to support the IB* topic.

Interdependence of Plants and Animals

Experiment #14 from Biology with Vernier

In this experiment, you will

  • Use a Dissolved Oxygen Probe to measure the dissolved oxygen in water.
  • Use a pH Sensor to measure the pH of water.
  • Use pH measurements to make inferences about the amount of CO2 dissolved in water.
  • Determine whether snails consume or produce oxygen and CO2 in water.
  • Determine whether plants consume or produce oxygen and CO2 in the light.
  • Determine whether plants consume or produce oxygen and CO2 in the dark.

Educational Standard
International Baccalaureate (IB)
Subject
Environmental Systems and Societies
Section
Core
Topic
2. Ecosystems and Ecology

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.

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