MCAS STE Biology: 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 statements about natural disturbances to an ecosystem is false?

Question 2 2. What is dispersion?

Question 3 3. Which of the following would not cause a disturbance in an ecosystem?

Question 4 4. Which best describes emigration?

Question 5 5. Which of the following processes takes carbon out of the short-term carbon cycle?

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Question 6 6. Which of the following organisms is a primary consumer of a prickly pear cactus?

Question 7 7. 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 8 8. What is a characteristic of animals that use chemicals for defense?

Question 9 9. If an introduced species survives in its new environment and starts breeding, what are the likely consequences?

Question 10 10. Put the following elements in order of abundance by weight in living organisms, starting with the most abundant, and ending with the least abundant: iron, copper, phosphorus, oxygen, and hydrogen.

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Question 11 11. What is commensalism?

Question 12 12. Identify the statement that is NOT true about acid rain.

Question 13 13. How is it possible to conclude that eutrophication of bodies of water has occured?

Question 14 14. What is the effect of predation on prey?

Question 15 15. How many trophic levels does an omnivore feed on within an ecosystem?

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Question 16 16. Carrying capacity is determined for a population mainly by what factor?

Question 17 17. What is niche differentiation?

Question 18 18. An association between two different species where the symbiont benefits and the host is harmed is known as:

Question 19 19. What is the 10 percent rule?

Question 20 20. What is coevolution?

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Question 21 21. Identify the conversion which represents nitrification.

Question 22 22. Which of the following is a true statement about introduced species?

Question 23 23. What do biologists think the most common reason for migration is?

Question 24 24. What type of mimicry occurs when a harmless animal mimics a dangerous or unpalatable animal?

Question 25 25. What is a modern human intervention in the phosphorus cycle?

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Question 26 26. What is ecological balance?

Question 27 27. 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 28 28. What is a population's range?

Question 29 29. What is the natality rate of a population that has 67 new births within a year, and began with 1300 individuals in the population at the start of that year?

Question 30 30. When burned, which fossil fuel will release the greatest amount of pollution into the air?

MCAS STE Biology: 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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