Study Guide for Biosphere Test
Name: ______________________________________________ Period: ________ Date: _____________
Define the following:
1. Abiotic:
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2. Biotic:
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3. Consumer:
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4. Decomposer:
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5. Ecosystem:
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6. Producer:
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7. Biodiversity:
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8. Biomass:
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Multiple Choice
Food Webs:
9. What would happen if mice were taken out of this food web?
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10. A rancher moved his herd of cattle to a mountain range pasture. What would show the carrying
capacity has been met.
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11. What causes the decrease in organisms as you move up the pyramid? (Think about an E word)
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12. Study the energy pyramid next to the food web.
13. As settlers moved into Utah, natural predators such as bears, wolves, and cougars were killed or
driven from the area. With the decrease of predator population the deer population exploded. What
ecological reason do scientists have for hunting?
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14. What organisms capture the sun’s energy? ______________________________________________
15. What is the path of energy through an ecosystem? Put these words in order of who receives the
energy first: producer, sun, consumer, and decomposer.
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Abiotic and Biotic Factors
16. How are biotic factors different from abiotic factors in an environment?
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17. Understand relationship between biotic and abiotic.
18. List some abiotic factors found in ecosystems:
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19. List some biotic factors found in ecosystems:
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20. What factor listed below is an abiotic factor? Horse, grass, tree, rock, insect, worm, bacteria, moss
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Extinction:
21. The Kirtland Warbler nests only in 6- to 15- year-old jack pine trees. Why does this behavior increase
their likelihood of going extinct?
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22. Extinctions have occurred since life began. Why are scientists concerned about plants and animals
going extinct?
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23. Polar bears have low reproduction rates. How might this affect their likelihood of becoming extinct?
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24. What human caused factors are leading to extinction? (Look of the extinction worksheet)
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Biome/Biodiversity
25. Which biome has the greatest diversity of living things? (Grassland, desert, rainforest, or tundra):
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Short Answers:
26. Define and know the following:
 Primary Consumer:______________________________________________________________
 Secondary Consumer: ___________________________________________________________
 Producer: _____________________________________________________________________
27. Know what percent of energy is transfer from one organism to another. _________
28. Is biodiversity important? Write a paragraph (3-5 sentences) using three of the following words
correctly: Biological, Esthetic, Ethical, Social, and Economic.
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