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Principles of Ecology Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following is NOT a source of nitrogen that is available to plants?

Question 2 2. Which of the following are part of the ecological community of a pond?

Question 3 3. Which of the following is a density-independent factor that regulates population growth?

Question 4 4. Which of the following biomes is maintained by browsers, grazers, or fire?

Question 5 5. In the graph below, what do we call the population size at which the curves for the birth and death rates intersect?

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Question 6 6. What type of mimicry occurs when a harmless animal mimics a dangerous or unpalatable animal?

Question 7 7. Which of the following statements is true of oceans but not true of freshwater ecosystems?

Question 8 8. What is a population?

Question 9 9. As their name suggests, stick insects ('walking sticks') strongly resemble sticks or twigs. The most specific term for this method of avoiding detection by predators is what?

Question 10 10. Which of the following is the best explanation for why we study the carbon cycle on a global scale and not as much in specific local ecosystems?

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Question 11 11. Refer to the graph of age distributions below. For a population that is stable in size, the age distribution of the graph would indicate

Question 12 12. In a typical ecosystem, what percentage of the energy produced by the autotrophs then consumed by the primary consumers will be passed along to the secondary consumers?

Question 13 13. Which of the following is true about amensalism?

Question 14 14. When a bee gathers nectar from a certain type of flower to make honey and in the process pollinates the flower, what kind of relationship exists between the bee and the flower?

Question 15 15. What is coevolution?

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Question 16 16. How many trophic levels does an omnivore feed on within an ecosystem?

Question 17 17. Which of the following is not one of the major threats to the climate caused by our alterations of the carbon cycle?

Question 18 18. Which of the following does not describe an antagonistic interaction between two living organisms?

Question 19 19. According to metapopulation theory, what will happen when a population of a particular species goes locally extinct in a particular patch of habitat?

Question 20 20. What is biogeochemical cycling?

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Question 21 21. Which of the following is FALSE about atmospheric carbon dioxide levels?

Question 22 22. Which of the following is a function of the National Park Service in the United States?

Question 23 23. Which of the following statements about keystone species is true?

Question 24 24. What is an ecomorph?

Question 25 25. Which of the following is a key feature of the life histories of species that have a type III survivorship curve?

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Question 26 26. What is ecological balance?

Question 27 27. Which of the following does NOT contribute to increase in carbon dioxide level in the atmosphere?

Question 28 28. What are the three major greenhouse gases in the Earth's atmosphere?

Question 29 29. What is the effect of predation on prey?

Question 30 30. Which of the following is an aquatic life zone in which mixing of fresh water and salt water occurs?

Principles of Ecology Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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