Ecology Exam Crossword Puzzle
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Ecology Exam Crossword
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cal = calories    kcal = kilocalories

1. Approximate doubling time in years for population with a 4% growth rate.

4. A common feline pet.

5. Percent growth rate for population with 60 births & 10 deaths per 1000.

6. Number of daughters per mother for zero population growth.

7. All the organisms in a natural community plus all the associated environmental factors.

12. More than half of the world's population depend on this plant for food.

13. Mathematical progression that increases exponentially.

15. Ecosystem that produces most of the earth's atmospheric oxygen.

17. The production of offspring.

20. Arborescent member of forest community.

21. Biotic communities have ____ energy available at each successive trophic level.

23. An endangered amphibian.

24. Condition of the desert ecosystem.

25. Law of Thermodynamics stating that energy can be converted from one form into another but it cannot be created nor destroyed.

28. Environmental factors that involve the presence of living organisms.

29. Primary energy source for members of the 1st trophic level.

31. A population increase by 100 percent.

33. The earth's primary source of energy.

34. Unlike oxygen, water, nitrogen & carbon, this resource isn't recycled.

35. A female sheep.

40. Reproduction in which each couple has one son & one daughter.

44. Occupies the first trophic level of a food chain.

46. Percent energy decrease at each link in the food chain.

48. An orderly sequence of different types of vegetation in a given region.

50. Population growth when carrying capacity = population size.

54. 100,000 lbs of phytoplankton makes ___ lbs of tuna in a 5-link tuna food chain.

55. Large geographical region supporting unique flora and fauna.

57. Not a natural significant population control factor in most animal populations.

59. Fecundity is proportional to survival rate of offspring (yes or no).

60. A Himalayan mountain goat.

61. Harvesting plankton from the ocean is like extracting ____.

62. Biological concentration of chemical residues increases along the food chain.

63. A large African antelope.

66. Starting with 10,000 cal of grass, the 3rd trophic level would contain one ____ cal.

69. The flora and fauna of a region.

70. A population increase by 200 percent.

71. Abbreviation for the California Native Plant Society.

72. An alkaloid beverage made from the leaves of an oriental shrub.

73. Graphical shape of energy, mass and numbers food chains.


cal = calories    kcal = kilocalories

1. Doubling time for U.S. population in years.

2. Prefix meaning not.

3. Marvelous organ providing us with vision.

4. Second most important food plant for people on planet Earth.

5. In Phytoplankton-Zooplankton-Herring-Mackerel-Tuna food chain, 50,000 lbs of phytoplankton supports ____ lbs of mackerel.

8. Occupies 3rd trophic level of a food chain.

9. In population that doubles every generation, how many female offspring are born to each fertile mother?

10. Doubling time in years for savings account earning 10% interest compounded annually.

11. Environmental factor affecting chaparral & coastal sage scrub communities.

14. Occupies 2nd trophic level of a food chain.

16. A haploid reproductive cell.

18. Baleen whales occupy this trophic level.

19. Occupies 2nd, 3rd and 4th trophic levels.

22. Style length of female fig flower that contains a wasp.

26. Food of a predator.

27. Marine animal generating electric current to protect itself.

29. Law of Thermodynamics stating that energy is dissipated as heat at each successive trophic level.

30. When the product of these two values = .695, the starting population will double.

32. A bovine mammal or castrated domesticated bull.

36. Behavioral population control in high level carnivore such as a lion.

37. Environmental factors such as climate, soil, fire, etc.

38. Interconnected food chains within an ecosystem.

39. Common canine pet.

41. Naturalized Australian tree that forever changed the southern Calif. landscape.

42. Another word for donkey or burro.

43. Number of links in food chain of baleen whale.

45. Maximum population size (capacity) for a given species that an ecosystem can support.

47. Food grown with natural fertilizers and without poisons.

49. In food chain starting with 100 kcal, how many links will result in carnivore with 0.001 kcal.

51. Style length of a female fig flower that bears a seed.

52. Reducing the population of troublesome pest animals without deadly poisons is called biological ____.

53. Insect that navigates by the position of the sun.

54. Level of nutrition or "link" in a food chain.

56. Used for currency by Homo sapiens sapiens.

58. With 20 year generation span, 80 people can be generated in 60 years. If only 26 people are generated in 60 years what is generation span?

64. Doubling time in years for population with growth rate of 7.72%?

65. Very successful rodent with high fecundity.

67. During aerobic respiration, 38 of these molecules are made.

68. Tree pollinated by symbiotic wasp.

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