Section 2.1 Organisms and Their Relationships
1. What is Ecology?
2. What is a biotic factor? List 3 biotic factors that might be found in Figure 2.5.
3. What is an abiotic factor? List 3 abiotic factors that might be found in Figure 2.5.
4. Fill in the missing pieces to the Levels of Organization chart.
5. All members of a population must be the same ______.
6. A biological community is all of the biotic / abiotic (circle one) things in the same geographical area.
7. An ecosystem is a ______and all of the ______that affect it.
8. What is a biome?
9. What is the difference between a habitat and a niche?
10. What are three types of Community Interactions?
11. Define symbiosis.
12. Provide an example for each type of symbiotic relationship. Tell how each organism is affected in the relationship.
- Mutualism –
- Commensalism –
- Parasitism –
Section 2.2 Flow of Energy in an Ecosystem
13. Define autotroph –
14. Define heterotroph –
15. Find the correct term for each description:
- A cow eats grass ______
- Bears eat plants and animals ______
- Lions eat meat ______
- Worms eat dead leaves ______
16. What is the difference between a food chain and a food web?
17. What types of organisms are on the bottom of an ecological pyramid? What types are on the top?
18. What would happen to an ecosystem if the ecological pyramid were reversed in order?
Section 2.3 Cycling of Matter
19. What is a biogeochemical cycle?
20. Where does 90% of water vapor evaporate from?
21. Makes up only 3% of all water ______
22. Contains 69% of all freshwater______
23. Process where plants turn carbon dioxide and water into carbohydrates and oxygen ______
24. The peat, coal, oil and gas deposits are formed from what in the carbon cycle?
25. Nitrogen is an element found in ______. The largest concentration of nitrogen is found in the ______.
26. What is nitrogen fixation?
27. Define denitrification:
28. What is the role of phosphorous in an ecosystem?