Population Ecology Basics 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. What is the purpose of a plant stem?

Question 2 2. What is a producer?

Question 3 3. Why are producers so important to an ecosystem?

Question 4 4. 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 5 5. What constitutes a food web?

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Question 6 6. What can an herbivore be categorized as?

Question 7 7. Legumes like _____ are important because _____.

Question 8 8. Photosynthesis is a process in plants that uses _____and produces energy and oxygen.

Question 9 9. In what ways can nitrogen gas be broken down into nutrients for plants?

Question 10 10. Which of the following trophic levels contains the lowest amount of original solar energy?

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Question 11 11. Where does much of solar energy go as it is passed along the energy pyramid?

Question 12 12. Approximately how much original solar energy remains at the top of the energy pyramid?

Question 13 13. A chaparral plant that is usually only seen in the first couple of years after a fire is also called what?

Question 14 14. After a glacier recedes, the moss and lichens that grow on the newly exposed rock surfaces are called what?

Question 15 15. What is a climax community?

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Question 16 16. What are animals that only eat one particular thing called?

Question 17 17. Which of these energy levels is directly above the producers?

Question 18 18. Primary consumers have special bacteria in their intestines to help them break down what?

Question 19 19. Which of the following best describes carrying capacity?

Question 20 20. What do we call something that restricts the number of organisms that can be supported in an environment?

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Question 21 21. What term is used to describe the community of animals, plants and other organisms that live in the same area?

Question 22 22. What is a limiting factor?

Question 23 23. Once a population reaches its environment's carrying capacity, what will happen to it?

Question 24 24. Populations numbers of any one organism _____.

Question 25 25. Using the graph below, explain why the deer population decreases after the wolf population increases

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Question 26 26. What happens during exponential growth?

Question 27 27. Using the graph below explain what will happen to the rabbit population as their population density increases

Question 28 28. Identify the food that is created through the use of decomposers.

Question 29 29.

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 30 30. Our understanding of decomposers has allowed scientists to create _____.

Population Ecology Basics 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!

7th Grade Science: Life Science  /  Science Courses
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