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Overview of Ecosystems 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!

Page 1

Question 1 1. How many trophic levels does an omnivore feed on within an ecosystem?

Question 2 2. What constitutes a food web?

Question 3 3. Which of the following organisms is a primary consumer of a prickly pear cactus?

Question 4 4. Which best describes the term biotic?

Question 5 5. Which term best defines an ecosystem?

Page 2

Question 6 6. Which of the following are abiotic?

Question 7 7. How does phosphorus enter an ecosystem?

Question 8 8. Phosphorus is not a part of which one of the following?

Question 9 9. Humans add phosphorus to the phosphorus cycle through _____.

Question 10 10. Which is the largest terrestrial ecosystem found on Earth?

Page 3

Question 11 11. Freshwater ecosystems are NOT classified by:

Question 12 12. What are the two main classifications of ecosystems?

Question 13 13. Identify the decomposer.

Question 14 14. Our understanding of decomposers has allowed scientists to create _____.

Question 15 15. Identify the food that is created through the use of decomposers.

Page 4

Question 16 16. What is the largest pool of carbon on the planet?

Question 17 17. 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?

Question 18 18. What is the primary source of carbon that can be used by plants?

Question 19 19. Ecological niches include ______.

Question 20 20. Which of the following is not part of an ant's ecological niche?

Page 5

Question 21 21. A species can be more successful if it has ______.

Question 22 22. Which one of the following is NOT a type of biomass studied by ecologists?

Question 23 23. A trophic level indicates which one of the following?

Question 24 24. Biomass is the total amount of what?

Question 25 25. The temperatures in Siberia are very cold, and only certain organisms can live in this harsh environment. This is an example of ______.

Page 6

Question 26 26. Which is NOT an example of an abiotic factor?

Question 27 27. Which of these statements about abiotic factors is true?

Question 28 28. 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 29 29. Which of the following is biotic?

Question 30 30. Phosphorus is a vital part of ATP, which gives all living things _____.

Overview of Ecosystems 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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