1. AP ENVIRONMENTAL SCIENCE INHABITANTS OF EARTH & THEIR RELATIONSHIPS AP EXAM REVIEW QUESTIONS Answer the following questions on a sheet of paper. Check your answers by the final slide.

2. 1. The relationship between a tick and a bird is best described as which of the following? is best described as which of the following? a. commensalism a. commensalism b. mutualism b. mutualism c. parasitism c. parasitism d. neutralism d. neutralism e. competition e. competition

3. 2. When two species live in the same habitat and use exactly the same resources, which and use exactly the same resources, which of the following will probably occur? of the following will probably occur? a. The two species can live together indefinitely. a. The two species can live together indefinitely. b. One of the species will eventually die. b. One of the species will eventually die. c. One species will evolve into a parasite. c. One species will evolve into a parasite. d. The two species do not interact. d. The two species do not interact. e. This competition does not occur in nature. e. This competition does not occur in nature.

4. 3. Organisms use different resources in the same habitat, and in this way avoid same habitat, and in this way avoid competition. This is referred to as competition. This is referred to as a. the Law of Tolerance. a. the Law of Tolerance. b. hunting and gathering. b. hunting and gathering. c. predator-prey relationship. c. predator-prey relationship. d. resource partitioning. d. resource partitioning. e. commensalism. e. commensalism.

5. 4. Which of the following is true about the roles of both parasites and predators in ecosystems? a. Predators & parasites can act as environmental resistance & allow the host population to grow. a. Predators & parasites can act as environmental resistance & allow the host population to grow. b. Predators are generally smaller & parasites support many predators. b. Predators are generally smaller & parasites support many predators. c. Predators generally have specialized means to capture prey. c. Predators generally have specialized means to capture prey. d. Predators & parasites can divide the host population so that both can feed off the hosts. d. Predators & parasites can divide the host population so that both can feed off the hosts. e. Parasites & predators eliminate the weak & sick, leaving the strongest to reproduce. e. Parasites & predators eliminate the weak & sick, leaving the strongest to reproduce.

6. 5. All of the following are true concerning the characteristics of a climax community EXCEPT a. the adult plants are small in size. a. the adult plants are small in size. b. there are many different species of plants. b. there are many different species of plants. c. there is a mixture of decomposers, producers, and consumers. c. there is a mixture of decomposers, producers, and consumers. d. most of the organisms are specialists in their niche requirements. d. most of the organisms are specialists in their niche requirements. e. there is a large amount of biomass. e. there is a large amount of biomass.

7. 6. Which of the following describes the direction of the flow of energy in a food chain? a. from parasite to host a. from parasite to host b. from predator to prey b. from predator to prey c. from prey to predator c. from prey to predator d. from one mutual to another d. from one mutual to another e. from prey to conmmensal e. from prey to conmmensal

8. 7. Which of the following element’s cycles includes long-term storage in rocks and a includes long-term storage in rocks and a short storage time in the atmosphere? short storage time in the atmosphere? a. sulfur a. sulfur b. carbon b. carbon c. nitrogen c. nitrogen d. calcium d. calcium e. uranium e. uranium

9. 8. The current trend where some species of bacteria have become resilient to antibiotics bacteria have become resilient to antibiotics is best described as is best described as a. genetic diversity. a. genetic diversity. b. speciation. b. speciation. c. extinction. c. extinction. d. macroevolution. d. macroevolution. e. microevoltuion. e. microevoltuion.

10. 9. Large herds of grazing mammals are most likely to be located likely to be located a. rain forest. a. rain forest. b. estuary. b. estuary. c. coniferous forest. c. coniferous forest. d. grasslands. d. grasslands. e. desert. e. desert.

11. Select the one lettered choice that best answers each question or best fits each statement. A choice may be used once, more than once, or not at all. a. inertia a. inertia b. disturbance b. disturbance c. primary succession c. primary succession d. secondary succession d. secondary succession e. tolerance e. tolerance 10. when late succession plants are not disturbed by early succession plants 11. when succession starts from an area where humans once farmed 12. when a community starts from bare rock 13. the tendency of an ecosystem to maintain its overall structure 14. an event that will instigate the process of succession

12. Select the one lettered choice that best answers each question or best fits each statement. A choice may be used once, more than once, or not at all. a. specialist species a. specialist species b. keystone species b. keystone species c. native species c. native species d. alien species d. alien species e. indicator species e. indicator species 15. the species that normally live and thrive in a habitat 16. species that play a pivotal role in the habitat 17. a species whose decline indicates damage to the habitat 18. a nonnative species 19. a species with a narrow niche, which can only live in a certain habitat certain habitat

13. ANSWERS 1. C8. E15. C 2. B9. D16. B 3. D10. E17. E 4. E11. D18. D 5. A12. C19. A 6. C13. A 7. A14. B