ecology I DO NOT WRITE ON THIS TEST WRITE ON THE ANSWER SHEET ONLY
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
____ 1. Consumers that eat both plants and animals are called a. omnivores. b. herbivores. c. carnivores. d. scavengers. ____ 2. Which of these consumers is a herbivore? a. lion b. deer c. spider d. snake ____ 3. If a kestrel eats a mouse that eats grass, the kestrel is a a. producer. b. second-level consumer. c. first-level consumer. d. decomposer. ____ 4. The many overlapping food chains in an ecosystem make up a(n) a. food web. b. niche. c. energy pyramid. d. feeding level.
____ 5. A diagram that shows the amount of energy that moves from one feeding level to another in a food web is called a(n) a. food chain. b. energy pyramid. c. ecosystem. d. niche. ____ 6. In an energy pyramid, which level has the most available energy? a. producer level b. first-level consumer level c. second-level consumer level d. third-level consumer level ____ 7. In which process do producers use carbon from carbon dioxide to produce other carbon-containing molecules? a. the nitrogen cycle b. photosynthesis c. precipitation d. the water cycle ____ 8. Dandelions, horses, and other organisms that were brought by humans from one part of the world to another are examples of a. native species. b. exotic species. c. parasites. d. endangered species. ____ 9. An organism that can make its own food is called a a. Consumer. b. Decomposer. c. Producer. d. Scavenger. ____ 10. Vultures, which feed on the bodies of dead organisms, are a. First-level consumers. b. Scavengers. c. Producers. d. Herbivores. ____ 11. The first organism in a food chain is always a a. Consumer. b. Herbivore. c. Carnivore. d. kProducer. ____ 12. What do producers release as a result of photosynthesis? a. hydrogen b. nitrogen c. oxygen d. carbon dioxide
Completion Complete each sentence or statement.
13. The thick fur of a polar bear is a(n) ______that allows the bear to live successfully in its environment. 14. A hawk building a nest on the arm of a cactus without hurting the cactus is an example of the symbiotic relationship called ______. 15. Bacteria and fungi are known as ______because they break down the remains of organisms. 16. The energy role of a grizzly bear is that of a(n) ______because it cannot make its own food. 17. A diagram called a(n) ______shows how much energy is available at each level of a food web. 18. The least amount of energy is available at the ______level of an energy pyramid. 19. The energy role of the first organism in a food chain is always a(n) ______. 20. An organism that eats only plants is a(n) ______consumer. 21. ______makes a leaf appear green. 22. ______gas is produced in photosynthesis.
Short Answer
Use the diagrams to answer each question.
23. List 2 primary producers pictured above. List 2 secondary consumers pictured above. List 2 abiotic factors pictured above.
24. Give an example of a population in the diagram above. Explain your choice. Give an example of a community. Explain your choice. List 1 abiotic factor that effects this ecosystem. Explain your choice. Use the diagram to answer each question.
25. How was the pheasant population changing at Point A?
26. Which letter marks the peak of the pheasant population?
27. What happened to the population between point B and point C?
Essay - Please answer 3 of the 5 essay questions with 5-7 full sentences. Please use your vocabulary where appropriate.
28. What is symbiosis (give me a definition), explain the 3 types of symbiotic relationships and give me an example of each.
29. Explain how primary producers get their energy. How does that energy then move through the ecosystem?
30. Explain why the populations of predator and its prey often follow regular cycles.
31. What do natural selection, adaptation, and competition have to do with one another? Define each and explain how they are related.
32. Explain the difference between a food pyramid, food web and a food chain.
EXTRA Write the balanced equation for photosynthesis.