OHS Environmental Science Chapters 6/7 Study Guide
1. What is the greatest limiting factor preventing plant growth in a desert?
2. What adaptations help animals survive in the desert?
3. Regardless of the biome, which trophic level would have the greatest biomass?
4. In which biome is there likely to be the biggest selection of insects, slugs, and fruits?
5. What do tropical rainforests and savannas have in common?
6. What role do plants play in maintaining ecological balance within ecosystems?
7. Define biome.
8. What are 3 plant adaptations allowing for survival in specific biomes?
9. Define climate.
10. What happens to precipitation and vegetation with an increase in latitude or altitude?
11. How do latitude and altitude affect the organisms that live in a biome?
12. Compare vegetation in the rainforest with that of the tundra.
13. Which biomes can be found between the equator and 30 degrees north latitude?
14. Which biome is characterized as being warm with very few nutrients in the soil?
15. Tropical rain forests contain what percentage of the world’s biodiversity?
16. Where do most species of animals live in the rain forests?
17. What are the two main threats of organisms in tropical rain forests?
18. Where are Temperate rain forests located in the United States?
19. Which of biome has extreme temperatures and the lowest amount of annual rainfall?
20. Mammals living in temperate grasslands would need what kinds of adaptations?
21. Plants living in the desert would need what adaptations?
22. A tundra biome has what type of climate?
23. Predict what would happen if grasslands got the same amount of rain as tropical rain
forests over the next 100 years.
24. Describe an example of how abiotic changes can impact biotic factors in biomes.
OHS Environmental Science Chapters 6/7 Test
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25. How do decomposers influence nutrient availability in topsoil?
26. The types of organisms in an aquatic ecosystem are mainly determined by
________________.
27. What are 3 factors affecting the distribution of aquatic life?
28. What two sources provide nutrients to estuaries?
29. Which of these biomes includes reefs, algae beds, and estuaries?
30. What is the source of most ocean pollution?
31. Which of the following is NOT a threat to coral reefs?
32. How do wetlands control flooding?
33. Which biome is represented by coniferous plants and migrating birds?
34. Name the biomes you would likely encounter as you move from the equator toward the
North Pole.
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KEY OHS Environmental Science Chapters 6/7 Test [24371]
1. What is the greatest limiting factor preventing plant growth in a desert? Water
availability.
2. What adaptations help animals survive in the desert? they get their moisture from
consuming succulent plants, are mostly nocturnal.
3. Regardless of the biome, which trophic level would have the greatest biomass?
producers
4. In which biome is there likely to be the biggest selection of insects, slugs, and fruits?
rainforests
5. What do tropical rainforests and savannas have in common? latitude
6. What role do plants play in maintaining ecological balance within ecosystems? Supply
Oxygen
7. Define biome. A large region characterized by a specific type of climate and certain
types of plants and animal communities.
8. What are 3 plant adaptations allowing for survival in specific biomes? Color, shape and
size
9. Define climate. Weather conditions in an area over a long period of time.
10. What happens to precipitation and vegetation with an increase in latitude or altitude?
Drier and sparse vegetation
11. How do latitude and altitude affect the organisms that live in a biome? In higher
altitudes and latitudes, biomes possess less precipitation, lower temperatures, and
fewer organisms that those in lower altitudes and latitudes
12. Compare vegetation in the rainforest with that of the tundra. Tall trees grow near the
equator while mosses and lichens grow in the tundra.
13. Which biomes can be found between the equator and 30 degrees north
latitude? Mountains, Tropical savanna, Desert, Tropical rain forest
14. Which biome is characterized as being warm with very few nutrients in the soil?
Tropical rain forest
15. Tropical rain forests contain what percentage of the world’s biodiversity? 50%
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16. Where do most species of animals live in the rain forests? canopy
17. What are the two main threats of organisms in tropical rain forests? Habitat destruction
and illegal trade
18. Where are Temperate rain forests located in the United States? Pacific Northwest
19. Which of biome has extreme temperatures and the lowest amount of annual rainfall?
desert
20. Mammals living in temperate grasslands would need what kinds of adaptations? Diets
of flowering plants or small shrubs, great vision, and fast speed
21. Plants living in the desert would need what adaptations? A thick, fleshy stem, spiny
leaves, deep roots, and a short blooming period
22. A tundra biome has what type of climate? Cold temperatures and low amounts of
rainfall
23. Predict what would happen if grasslands got the same amount of rain as tropical rain
forests over the next 100 years. Larger plants and trees would take over the region
24. Describe an example of how abiotic changes can impact biotic factors in biomes.
Drought conditions increase competition among consumers.
25. How do decomposers influence nutrient availability in topsoil?
26. The types of organisms in an aquatic ecosystem are mainly determined by
________________. salinity
27. What are 3 factors affecting the distribution of aquatic life? Temperature, sunlight, and
dissolved oxygen
28. What two sources provide nutrients to estuaries? Rivers and oceans
29. Which of these biomes includes reefs, algae beds, and estuaries? marine
30. What is the source of most ocean pollution? Activities on land
31. Which of the following is NOT a threat to coral reefs? zooplankton
32. How do wetlands control flooding? By absorbing water from rivers
33. Which biome is represented by coniferous plants and migrating birds? Taiga
34. Name the biomes you would likely encounter as you move from the equator toward the
North Pole. Rain forests, deserts, taiga.
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