2. 8 th Grade Science Organisms and their Environment Review

3. A:B: PreyDecomposer C:D: producerHerbivore #1 The tree is an example of a _______ in the food web. Producers perform photosynthesis.

4. C. Producer

5. A:B: SnakeDeer C:D: CricketNone of these #2 In this food web, which of these organism has the greatest number of food sources?

6. B. Deer

7. A:B: Predator - Mountain lion Prey - Deer Predator – Deer Prey - Tree C:D: Predator – Snake Prey - Cricket All of these #3 Identify one predator-prey relationship in this food web.

8. A. Predator - Mountain lion Prey - Deer

9. A:B: parasite C:D: symbiosisomnivore mutualism #4 Heartworms live inside of a dog’s heart and will eventually kill the dog. The heartworm is an example of a ____.

10. B. parasite

11. A:B: Consumers C:D: DecomposersOmnivores Producers #5 What organisms break down the remains of plants and other organisms. These organisms are necessary to insure that the atoms recycle back into the environment.

12. C. Decomposers

13. A:B: producercomsumer C:D: populationpredator #6 Organism that produce their own food.

14. A. producer

15. A:B: decomposerparasitism C:D: mutualismmatabolism #7 A symbiotic relationship between to organisms in which one benefits while the other is harmed.

16. B. parasitism

17. A:B: herbivoreomnivore C:D: carnivoreecoviore #8 Consumers that eat both plants and animals. Example: Mouse

18. B. omnivore

19. A:B: ecoviorecarnivore C:D: herbivoreomnivore #9 Consumers that eat only plants. Examples: Grasshopper, Rabbit

20. C. Herbivore

21. A:B: CarnivoreProducer C:D: ParasiteHerbivore #10 Consumers that eat only meat. Example: Mountain Lion

22. A. Carnivore

23. A:B: Symbiotic relationshipStimulus relationship C:D: HomeostasisUnitarianism #11 A close, long-term relationship between two or more species.

24. A. Symbiosis relationship

25. A:B: preysymbiosis # 12 An organism that cannot make its own food. C:D: consumerproducer

26. C. consumer

27. A:B: Web chain Food chain C:D: Both of theseNeither of these A diagram that shows the energy flow from one organism to the next. #13

28. B. Food chain

29. A:B: Food webFood chain C:D: ecologyFood chart #14 A diagram that consists of many overlapping food chains

30. B. Food web

31. A:B: biosphereecosystem #15 A unit consisting of all the living and nonliving things in a given area that interact with one another. C:D: communitypopulation

32. B. ecosystem

33. A:B: abioticecology C:D: ecosystembiotic #16 Living things in an ecosystem.

34. D. Biotic

35. A:B: abioticbiotic C:D: ecologyecosystem #17 Non-living things in an ecosystem.

36. A. Abiotic

37. A:B: MoonSun C:D: PlantsConsumers #18 The original source of energy in a food web.

38. B. Sun

39. A:B: The energy flow from provider to user. They animal which the organism consumes. C:D: BothNeither #19 What do the arrows represent in this food web?

40. A. The energy flow from provider to user.

41. A:B: The mice would increase The corn would decrease The hawks would decrease The mice would decrease The corn would increase The hawks would decrease C:D: BothNeither What would happen if the snakes are killed in this ecosystem? #20

42. A. The mice would increase The corn would decrease The hawks would decrease

43. A:B: The corn would increase, but all of the animals above the cricket on the food chain would decrease The mice would increase The corn would increase The hawks would increase C:D: BothNeither What would happen if a farmer sprayed a pesticide that killed all the crickets? #21

44. A. The corn would increase, but all of the animals above the cricket on the food chain would decrease

45. A:B: IncreasesDecreases C:D: Stays the same Sometimes increases and sometimes decreases In a food chain, the amount of energy ________ as it passes from one level to the next #22

46. B. Decreases

47. A:B: Heat Light C:D: Kinetic Chemical When the mouse eats the corn in this food chain, what form of energy passes directly from the corn to the mouse? #23

48. D. Chemical

49. A:B: Snake and hawk preying on the mouse Hawk and mouse preying on the shrubs C:D: Rabbit and snake preying on the cricket None of these #24 Give an example of organisms competing for a biotic factor in an ecosystem.

50. A. Snake and hawk preying on the mouse

51. A:B: Organisms competing for prey Organisms competing for water C:D: Organisms competing for space None of these #25 Give an example of organisms competing for an abiotic factor in an ecosystem.

52. B. Organisms competing for water C. Organisms competing for space

53. A:B: Population will increase Population could become extinct #26 What happens if ecosystems change and a population of organisms does not adapt to the change? C:D: BothNeither

54. B. Population could become extinct

55. A:B: Changing ecosystems by cutting down trees Decreasing animal populations by hunting C:D: Decreasing water supplies through pollution All of these #27 How are humans increasing competition within ecosystems?

56. D. All of these

57. A:B: Destroyed plants eaten by fish Killed fish C:D: Killed sea birdsAll of these #28 How has the BP Oil Spill negatively impacted the ecosystems in the Gulf of Mexico

58. D. All of these

59. A:B: Barrier reefArtificial reef C:D: Marine reefNone of these #29 a human-made underwater structure, built to increase marine life.

60. B. Artificial reef

61. A:B: Space environmentMarine environment C:D: Terrestrial environmentNone of these #30 The Earth's land area, including its manmade and natural surface and sub-surface features.

62. C. Terrestrial environment

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