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MTLE Middle Level Science: Interdependence, Energy Flow & 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. Being interdisciplinary means that ecosystem ecologists:

Question 2 2. Our understanding of decomposers has allowed scientists to create _____.

Question 3 3. The term xerocoles refers to an _____.

Question 4 4.

A known amount of waste is allowed to decompose in four different regions of the earth.

Choose the country where the rate of decomposition will be fastest.

Question 5 5. Why does the biodiversity of estuaries and salt marshes fluctuate?

Page 2

Question 6 6. If you want to determine the species richness index specifically for the number of fish on a coral reef, which of the following would be the best way to sample?

Question 7 7. The majority of biodiversity in Antarctica is found in _____.

Question 8 8. Why are primary producers important?

Question 9 9. Which is NOT an example of an abiotic factor?

Question 10 10. Which of the following factors does NOT influence the index of species richness?

Page 3

Question 11 11. What is a climax community?

Question 12 12. If you wanted to chop down your own Christmas tree, in which forest type(s) should you look?

Question 13 13. Biotic factors that affect other organisms in an ecosystem include all but which of the following factors?

Question 14 14. Taxonomy is the science of:

Question 15 15. Identify the decomposer.

Page 4

Question 16 16. Why is being an omnivore the ideal position in a food web in terms of energy?

Question 17 17. Ecosystems:

Question 18 18. Which of these statements about abiotic factors is true?

Question 19 19. After a glacier recedes, the moss and lichens that grow on the newly exposed rock surfaces are called what?

Question 20 20. Which of these events in an ecosystem is not a biotic factor?

Page 5

Question 21 21. Which ecosystem is characterized by high biodiversity and numerous organisms that are nocturnal?

Question 22 22. Which forest type(s) experience significant seasonal variation in temperature?

Question 23 23. What is a frozen lake an example of? Choose the best answer.

Question 24 24. The carrying capacity of an ecosystem is ______.

Question 25 25. Why are there so few food webs with more than five levels of consumers?

Page 6

Question 26 26. ____ are natural systems that are made up of ____ and non-living things working together in a variety of ways.

Question 27 27. The temperatures in Siberia are very cold, and only certain organisms can live in this harsh environment. This is an example of ______.

Question 28 28. Trophic interactions are:

Question 29 29. Which of these is not an example of a biotic factor in an ecosystem?

Question 30 30. What role do decomposers play in the food web?

MTLE Middle Level Science: Interdependence, Energy Flow & 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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