Name: ______date: ______
AcademicReview for Test on Ecology and Scientific Method
Directions: Answer each question as a review for the test. Use complete sentences.
1. What is the ultimate source of energy for almost every living thing on earth?
2. Are there any organisms/ecosystems that do not rely on your answer to number 1 for energy? If so, provide examples.
3. What is the difference between a food chain, and a food web? Explain. (understand what the arrows show)
4. Which group of organisms is missing from a food web? How do they obtain energy? Explain.
5. Fill in the chart below
Term / Define the term / List at least two examplesUses sunlight to make its own food
Herbivore
Humans, bears
Decomposer
6. Define limiting factor? Provide at least five examples of limiting factors.
7. Under each graph below, identify what type of growth is occurring, and describe what conditions could make the graph.
8. What is carrying capacity? How does it relate to limiting factors?
9. Fill in the chart below.
Type of symbiosis / definition / examplemutualism
commensalism
parasitism
10. What is biodiversity? Explain how biodiversity is a measure for how healthy an ecosystem is.
11.
12. Design an experimental setup to test the following scientific question: How do different colors of light affect the rate of plant growth?
Question:
Hypothesis:
Test:
Conclusion:
What should a scientist do if his conclusion does not support his hypothesis? Explain.
13.
14. Based on the energy pyramid, explain why there are significantly less lions in the African Savanna than there are grasses.
15. According to the energy pyramid, each trophic level going up the food chain receives only ______% of the available energy from the trophic level below it.
16. If a mouse stores 1000 units of energy in its body, how much energy will the snake extract from it when it east and digests it? ______units
17. Why can’t all the energy in one trophic level be transferred to the next? Provide examples.
18. Why do biotic factors interact? Explain.
19. Explain how the concept of niche and competitive exclusion relate to one another.
20. Explain what is wrong with the following statement: “Both matter and energy can be cycled through an ecosystem many times”
21. What is biological magnification? Explain how the concept is relevant to you as a member of the human species.
22. Provide an example that demonstrates each of the letters of the HIPPO acronym.