Assessment criteria Unit 7

1. Given a group of organisms, make a trophic web and explain what it represents.
2. Know the trophic levels: producers, consumers (primary, secondary and tertiary) and decomposers.
3. Explain how matter flows in an ecosystem.
4. Explain how energy flows in an ecosystem.
5. Define biomass and production.
6. Know what a trophic pyramid is and its types.
7. Given a trophic pyramid, explain it.
8. Given some data about the organisms in an ecosystem, draw a trophic pyramid.
9. Given a sketch of the carbon cycle, explain it.
10. Given a sketch of the nitrogen cycle, explain it.