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Life, 4/e

Ricki Lewis, University of New York at Albany
Mariëlle Hoefnagels, University of Oklahoma
Douglas Gaffin, University of Oklahoma
Bruce Parker, Utah Valley State College

Biomes and Aquatic Ecosystems

Testing Your Knowledge

1. How does the fact that the Earth is a sphere tilted on its axis influence the distribution of life?

2. Describe the zones of a(n):

a. lake

b. ocean

c. mangrove swamp

3. What are the sources of energy in the various zones of the ocean?

4. List adaptations that enable organisms to survive conditions in the following biomes:

a. tropical rain forest

b. tropical dry forest

c. savanna

d. temperate grassland

e. tundra

f. desert

g. taiga

5. How can the tropical rain forest support diverse and abundant life with such poor soil?

6. What is permafrost?

7. How does photosynthetic activity differ in the zones of a lake?

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1. Compare and contrast the challenges that alternating dry and wet conditions pose to organisms living in:

a. The intertidal zone.

b. A tropical savanna.

c. A river.

2. Distinguish between vertical stratification and thermal stratification.

3. What do fall and spring turnover and upwelling have in common? How do they differ?

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