Question 1

In the tropical deciduous forest, the amount of_________ defines the seasons.

Accepted Answer

The answer of In the tropical deciduous forest, the amount...

Question 2

On the basis of nutrient content, a mountain lake with little sediment or nutrients is classified as a(n) _________lake.

Accepted Answer

The answer of On the basis of nutrient content, a...

Question 3

The profundal zone is home to organisms that are

Accepted Answer

A)  photosynthetic. 
B)  intertidal. 
C)  decomposers and detritivores. 
D)  eutrophic. 
E)  adapted to high levels of light. 
A)  photosynthetic. 
B)  intertidal. 
C)  decomposers and detritivores. 
D)  eutrophic. 
E)  adapted to high levels of light.

Question 4

Plants with small leaves and thick stems that store water are more likely to be found growing in a rain shadow.

Accepted Answer

A) True 
 B)False

Question 5

One of the most popular hikes in Rocky Mountain National Park is the tundra trail. What effects would you expect from hundreds of people walking on this trail every day during the season?

Accepted Answer

Because the plants are so smal

Question 6

The striking dissimilarities in plant communities among different biomes that have the same average yearly amount of rainfall can be explained by the fact that

Accepted Answer

A)  temperature and rainfall interact to influence plant communities. 
B)  plant communities are not influenced by rainfall. 
C)  plant communities are influenced more by the acidity of rain than by the amount of rainfall. 
D)  plant communities evolve more slowly than changes in weather patterns. 
E)  plant communities occur randomly, depending on where seeds are blown or carried. 
A)  temperature and rainfall interact to influence plant communities. 
B)  plant communities are not influenced by rainfall. 
C)  plant communities are influenced more by the acidity of rain than by the amount of rainfall. 
D)  plant communities evolve more slowly than changes in weather patterns. 
E)  plant communities occur randomly, depending on where seeds are blown or carried.

Question 7

Explain, in ecological terms, why cattle ranchers and conservationists have battled one another over cattle-grazing practices in the western shortgrass prairie biome of the American West. How has grazing changed the habitat?

Accepted Answer

Overgrazing of grasses by cattle has alt

Question 8

_________is the year-round layer of frozen soil that limits the growth of trees and other deep-rooted plants in the arctic tundra.

Accepted Answer

The answer of _________is the year-round layer of frozen soil...

Question 9

Channeling rivers improves their productivity and decreases erosion.

Accepted Answer

A) True 
 B)False

Question 10

Earthʹs ozone layer is extremely important because it

Accepted Answer

A)  traps heat so that Earthʹs temperature does not fall too much. 
B)  blocks incoming UV radiation, which is damaging to animals and reduces photosynthesis in plants and algae. 
C)  maintains high carbon dioxide concentrations so that photosynthesis can occur. 
D)  blocks incoming visible light to protect Earth against the greenhouse effect. 
E)  traps harmful infrared rays. 
A)  traps heat so that Earthʹs temperature does not fall too much. 
B)  blocks incoming UV radiation, which is damaging to animals and reduces photosynthesis in plants and algae. 
C)  maintains high carbon dioxide concentrations so that photosynthesis can occur. 
D)  blocks incoming visible light to protect Earth against the greenhouse effect. 
E)  traps harmful infrared rays.

Question 11

The weather at the equator is both fairly constant seasonally and quite warm. What physical factors of Earthʹs position relative to the sun are responsible for these characteristics?

Accepted Answer

At the equator, sunlight hits Earthʹs su

Question 12

Estuaries have very low bioproductivity and diversity.

Accepted Answer

A) True 
 B)False

Question 13

Patterns of temperature and precipitation that prevail over years are referred to as weather.

Accepted Answer

A) True 
 B)False

Question 14

In an attempt to stop desertification, some groups have changed the way they work with the land. They plant trees to stop erosion, build small barriers to slow water runoff on slopes, and bring food to their animals rather than letting them graze freely. Why would these techniques help stop desertification?

Accepted Answer

A)  The trees increase evaporation. 
B)  They increase the amount of water used in the area. 
C)  People move out of the areas rather than follow these techniques, lessening the water demand. 
D)  They break up the cyanobacteria in the soil. 
E)  Trees, runoff diversion, and changes in grazing patterns all conserve water. 
A)  The trees increase evaporation. 
B)  They increase the amount of water used in the area. 
C)  People move out of the areas rather than follow these techniques, lessening the water demand. 
D)  They break up the cyanobacteria in the soil. 
E)  Trees, runoff diversion, and changes in grazing patterns all conserve water.

Question 15

What factors determine the patterns of ocean currents?

Accepted Answer

The patterns are determined by

Question 16

The destruction of the_________ layer increases the amount of damaging UV light that reaches Earth?s surface.

Accepted Answer

The answer of The destruction of the_________ layer increases the...

Question 17

In a tropical rain forest, the majority of animals are found

Accepted Answer

A)  in the cleared areas. 
B)  in the soil. 
C)  on the forest floor. 
D)  in the towering treetops. 
E)  in the shorter trees. 
A)  in the cleared areas. 
B)  in the soil. 
C)  on the forest floor. 
D)  in the towering treetops. 
E)  in the shorter trees.

Question 18

Which biome is rapidly expanding into the African Sahel?

Accepted Answer

A)  Tropical rain forest 
B)  Savanna 
C)  Desert 
D)  Chaparral 
E)  Tropical deciduous forest 
A)  Tropical rain forest 
B)  Savanna 
C)  Desert 
D)  Chaparral 
E)  Tropical deciduous forest

Question 19

Oligotrophic lakes

Accepted Answer

A)  depend on sulfur bacteria as the primary producers. 
B)  provide breeding grounds for many fish and crustacean species. 
C)  support dense plant communities. 
D)  remove nutrient-rich sediments from field runoff. 
E)  have low levels of nutrients and few organisms. 
A)  depend on sulfur bacteria as the primary producers. 
B)  provide breeding grounds for many fish and crustacean species. 
C)  support dense plant communities. 
D)  remove nutrient-rich sediments from field runoff. 
E)  have low levels of nutrients and few organisms.

Question 20

Plants in this biome have small leaves coated with protective waxes to reduce evaporation, and they can survive a fire.

Accepted Answer

A)  Chaparral 
B)  Tropical rain forest 
C)  Tropical deciduous forest 
D)  Savanna 
E)  Desert 
A)  Chaparral 
B)  Tropical rain forest 
C)  Tropical deciduous forest 
D)  Savanna 
E)  Desert

Exam 30: Earths Diverse Ecosystems

In the tropical deciduous forest, the amount of_________ defines the seasons.

On the basis of nutrient content, a mountain lake with little sediment or nutrients is classified as a(n) _________lake.

The profundal zone is home to organisms that are

Plants with small leaves and thick stems that store water are more likely to be found growing in a rain shadow.

One of the most popular hikes in Rocky Mountain National Park is the tundra trail. What effects would you expect from hundreds of people walking on this trail every day during the season?

The striking dissimilarities in plant communities among different biomes that have the same average yearly amount of rainfall can be explained by the fact that

Explain, in ecological terms, why cattle ranchers and conservationists have battled one another over cattle-grazing practices in the western shortgrass prairie biome of the American West. How has grazing changed the habitat?

_________is the year-round layer of frozen soil that limits the growth of trees and other deep-rooted plants in the arctic tundra.

Channeling rivers improves their productivity and decreases erosion.

Earthʹs ozone layer is extremely important because it

The weather at the equator is both fairly constant seasonally and quite warm. What physical factors of Earthʹs position relative to the sun are responsible for these characteristics?

Estuaries have very low bioproductivity and diversity.

Patterns of temperature and precipitation that prevail over years are referred to as weather.

What factors determine the patterns of ocean currents?

The destruction of the_________ layer increases the amount of damaging UV light that reaches Earth?s surface.

In a tropical rain forest, the majority of animals are found

Which biome is rapidly expanding into the African Sahel?

Oligotrophic lakes

Plants in this biome have small leaves coated with protective waxes to reduce evaporation, and they can survive a fire.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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