Populations and Biological Communities 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 processes provides balance within the native habitat of a species, but is no longer present once the species is introduced into a new habitat?

Question 2 2. What is a wildlife corridor?

Question 3 3. After a glacier recedes, the moss and lichens that grow on the newly exposed rock surfaces are called what?

Question 4 4. How have humans caused habitat fragmentation for animal and plant species around the world?

Question 5 5. Which term is used to describe how plants spread their seeds?

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Question 6 6. What is the major difference between competitive exclusion and local extinction?

Question 7 7. According to this graph, at which elevation is the population density of Species A the highest?

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

Question 9 9. Which of the following is not an indirect indicator that biologists can use to estimate a population's density?

Question 10 10. What is an ecomorph?

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Question 11 11. Which of the following is true about amensalism?

Question 12 12. According to metapopulation theory, what will happen when a population of a particular species goes locally extinct in a particular patch of habitat?

Question 13 13. Which of the following is a major goal of conservation biologists?

Question 14 14. 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 15 15. What is a characteristic of animals that use chemicals for defense?

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Question 16 16. Which of the following events is likely to precede primary succession?

Question 17 17. What is an invasive species?

Question 18 18. What does the term colonization mean in terms of organisms?

Question 19 19. What is the effect of predation on prey?

Question 20 20. What is dispersion?

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Question 21 21. Which ecological theory estimates the number of species that can live on an island based on the island's size and proximity to a mainland source of species?

Question 22 22. Which specific field of science gave rise to the theoretical idea of island biogeography and its counterpart, island biodiversity?

Question 23 23. What is a climax community?

Question 24 24. The chaparral biome is characterized by what?

Question 25 25. What usually happens in a natural population as it approaches its carrying capacity?

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Question 26 26. 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 27 27. A chaparral plant that is usually only seen in the first couple of years after a fire is also called what?

Question 28 28. According to the r/K selection theory, an r-selected species has which of the following characteristics?

Question 29 29. If an introduced species survives in its new environment and starts breeding, what are the likely consequences?

Question 30 30. Which of these large organisms has a type I survivorship curve?

Populations and Biological Communities 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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