Assessment criteria Unit 6

1. Define ecosystem.
2. Define species, population, community, habitat and ecological niche.
3. Explain environmental factors and limiting factors.
4. Given a tolerance curve, explain it.
5. Name the abiotic factors on land and in water and describe how they vary.
6. Give examples of adaptations of organisms, on land and in water, to light, temperature and water.
7. Explain the relationships among the organisms in an ecosystem and give examples.
8. Given a growth curve, explain it.
9. Explain what a succession is and what kinds of successions can occur.
10. Define climax community.
11. Define homeostasis.
12. Explain an example of these mechanisms of self-regulation: migration and feedback in predator-prey system.