GRE Biology: Ecological Interactions 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 organisms is a primary consumer of a prickly pear cactus?

Question 2 2. Which of these large organisms has a type I survivorship curve?

Question 3 3. What is coevolution?

Question 4 4. Which statement accurately portrays Monarch and Viceroy butterflies?

Question 5 5. What usually happens in a natural population as it approaches its carrying capacity?

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Question 6 6. Which of the following is true about amensalism?

Question 7 7. What is the major difference between competitive exclusion and local extinction?

Question 8 8. What do biologists think the most common reason for migration is?

Question 9 9. A chaparral plant that is usually only seen in the first couple of years after a fire is also called what?

Question 10 10. 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?

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Question 11 11. Which of the following is not an indirect indicator that biologists can use to estimate a population's density?

Question 12 12. What does the term colonization mean in terms of organisms?

Question 13 13. Which term is used to describe how plants spread their seeds?

Question 14 14. Which of the following events is likely to precede primary succession?

Question 15 15. 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?

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Question 16 16. What is a wildlife corridor?

Question 17 17. What is a climax community?

Question 18 18. What is dispersion?

Question 19 19. How have humans caused habitat fragmentation for animal and plant species around the world?

Question 20 20. What is an ecomorph?

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Question 21 21. How many trophic levels does an omnivore feed on within an ecosystem?

Question 22 22. Which of the following is not a feature of a metapopulation?

Question 23 23. After a glacier recedes, the moss and lichens that grow on the newly exposed rock surfaces are called what?

Question 24 24. What is commensalism?

Question 25 25. According to this graph, at which elevation is the population density of Species A the highest?

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Question 26 26. If a mosquito feeds on a bird that is infected with the West Nile Virus and then feeds on a human being who then contracts the virus, what role is the mosquito playing in the infection of the person?

Question 27 27. According to the r/K selection theory, an r-selected species has which of the following characteristics?

Question 28 28. The chaparral biome is characterized by what?

Question 29 29. What is a characteristic of animals that use chemicals for defense?

Question 30 30. Which specific field of science gave rise to the theoretical idea of island biogeography and its counterpart, island biodiversity?

GRE Biology: Ecological Interactions 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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