Ecosystems, Photosynthesis and Respiration - Science Dimensions 3 - Chapters 6 & 7
Knowledge & skills
- Explain the term conservation of energy and its implications in ecosystems.
- Distinguish between the biotic and abiotic components of an ecosystem.
- Compare and explain the role of producers, consumers, and decomposers in the cycling of matter through ecosystems.
- Describe the flow of energy through an ecosystem.
- Explain why there is a limit to the number of links in a food chain.
- Explain the changes that take place in plants as they photosynthesise and in plants and animals as they under go respiration (aerobic and anaerobic)
- Explain the processes of photosynthesis and respiration using word equations.
- Describe some impacts of human activities on ecosystems and discuss the positive and negative impacts of the use of pesticides and other chemicals on ecosystems.
- Draw flow diagrams of the carbon, nitrogen and water cycles.
- Discuss the issues associated with conservation of the environment.
- Carry out experiments relating to photosynthesis and respiration.
- Describe how sugars fats and protiens are used as an energy source.
- Describe the daily energy requirements for humans.
Experiments
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Ecosystems, Photosynthesis and Respiration