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Ecology Quiz 83 (60 MCQs)

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1. Natural selection or survival of the fittest, results in ..... such as webbed feet, special beaks on different birds, and coloration
2. Heterotrophs that eat producers and other heterotrophs are called .....
3. Which is not a decomposer
4. Which factor(s) affect aquatic ecosystems?
5. Variation of a species that live in different geographic areas
6. The most energy is available at the ..... level of an energy pyramid?
7. A tanker that runs aground causing oil to leak into the ocean is a ..... water pollutant.
8. If there is not enough food, a species may .....
9. All the organisms of the same species in an area
10. To be considered a community, populations must live close enough together to interact.
11. Identify an a example of an Abiotic Factor?
12. The main source of energy for all of earth's food chains is the .....
13. Competitive exclusion principle is
14. In the oxygen-carbon dioxide cycle, organisms such as plants release oxygen into the atmosphere during ....., where it can be taken in by animals, plants, and other organisms.
15. When only a few of its members are living that the entire species may become extinct.
16. The term ecologists use to describe the number of individuals moving away from a population is
17. What are abiotic factors?
18. As the hawk population increases in an ecosystem, the deer and mouse population will most likely decrease as a result of:
19. When one organism preys on another organism for food
20. Given this statement, which trophic level does the snake belong to?A snake that eats a frog that has eaten an insect that fed on a plant
21. Carbon dioxide is produced by the burning of fossil fuels
22. Why is the ocean important to the carbon cycle?
23. Human actions that release carbon into the atmosphere include
24. Anything that can live on its own
25. An example of a density dependent factor would be .....
26. The total variety of living organisms in the world is known as
27. During ecological succession, which of the following would be the last things to develop in an area?
28. An inactive state during which normal body activities slow.
29. If one species is helped, and one is NOT affected, what is the relationship?
30. The nitrogen found in the atmosphere is not in a form that plants or animals can use. What converts it into a usable form?
31. Which of the following is an example of a biotic factor of an ecosystem?
32. When aquatic organisms die, they sink to the bottom, so water near the bottom may contain more nutrients than water at other depths.
33. The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as .....
34. Which organisms convert nitrogen to a usable form for plants and animals?
35. Organisms that eat other organisms to gain energy.
36. The movement of water through Earth, its atmosphere and living things
37. The kangaroo rat is able to get all of the water it needs through it's food and therefore, never needs to drink liquid. This animal has adapted to survive in which biome that rains less than 2 inches a year?
38. A ..... includes the INTERACTIONS all living and non-living things in an environment.
39. In Southern California, the intentional reduction of the coyote population has led to a decrease in the types of song birds in that area. Which is a likely explanation why song bird populations have decreased?
40. A group of organisms that are the same species and live in the same area is known as what?
41. Which of the following adaptations would you see from an animal that lives in a desert biome?
42. Which of the following is a symbiotic relationship?
43. Bacteria are unicellular
44. A specific source of pollution is known as
45. The Australian pitcher plant (Cephalotus follicularis) is a green plant that traps and feeds on flies and other live insects. What is this plant's mode of nutrition?
46. The highest level of organization is called:
47. Plants get Co2 from
48. Precipitation and evaporation are important components of the
49. The ..... is sometimes called "the brains" of the cell.
50. The thin volume of earth and its atmosphere that supports life
51. A change in regional or global climate patterns
52. A mouse eats the grass, a snake eats the mouse and the hawk eats the snake. Who has the least amount of the original energy from this food chain?
53. Large geographic areas that have similar climates and ecosystems.
54. A model that shows a single sequence of feeding relationships is called a
55. What is the purpose of a pioneer species?
56. WhenNO members of a species are left, this is an example of .....
57. If you are measuring the amount of population that is in a specific area you are measuring the?
58. What type of relationship between organisms is one in which one organism benefits and the other is not affected?
59. What do you call water that flows on Earth's surface from high elevation to low elevation?
60. What do we call water that flows over the ground surface rather than soaking in?
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