Question 1

Which of the following results from the competition for sunlight in a plant community?

Accepted Answer

A)  varying heights of plants 
B)  leaf orientation 
C)  plant structure 
D)  all of these 
A)  varying heights of plants 
B)  leaf orientation 
C)  plant structure 
D)  all of these

Question 2

Which of the following is $\underline { \text { not } }$ part of an ecosystem?

Accepted Answer

A)  Earth's crust 
B)  flowers 
C)  carbon and nitrogen 
D)  mountain tops 
E)  All of these are parts of ecosystems. 
A)  Earth's crust 
B)  flowers 
C)  carbon and nitrogen 
D)  mountain tops 
E)  All of these are parts of ecosystems.

Question 3

Local names for tropical savanna vary worldwide and include all of the following except

Accepted Answer

A)  brigalow scrub. 
B)  Campo Cerrado. 
C)  Pantanal. 
D)  Llanos. 
A)  brigalow scrub. 
B)  Campo Cerrado. 
C)  Pantanal. 
D)  Llanos.

Question 4

The Arctic National Wildlife Reserve (ANWR)

Accepted Answer

A)  is the only portion of Alaska's Arctic coast not open to oil drilling. 
B)  contains as much oil as could be saved by a minor improvement in cars' efficiency. 
C)  would be ruined for centuries for a five-month supply of oil. 
D)  is home to over 200,000 caribou, polar and grizzly bears, musk oxen, and wolves. 
E)  all of the above 
A)  is the only portion of Alaska's Arctic coast not open to oil drilling. 
B)  contains as much oil as could be saved by a minor improvement in cars' efficiency. 
C)  would be ruined for centuries for a five-month supply of oil. 
D)  is home to over 200,000 caribou, polar and grizzly bears, musk oxen, and wolves. 
E)  all of the above

Question 5

Which of the following is $\underline {\text { false }}$ regarding the hypoxic zone (Dead Zone) off the coast of Louisiana?

Accepted Answer

A)  By 2008 it stretched across the entire Texas Gulf Coast. 
B)  Dead zones worldwide cover 250,000 square km (94,600 square miles). 
C)  The agricultural, feedlot, and fertilizer industries deny any connection between their nutrient runoff and the hypoxic zone. 
D)  The hypoxic zone is deadly to marine organisms due to its toxically high oxygen levels. 
A)  By 2008 it stretched across the entire Texas Gulf Coast. 
B)  Dead zones worldwide cover 250,000 square km (94,600 square miles). 
C)  The agricultural, feedlot, and fertilizer industries deny any connection between their nutrient runoff and the hypoxic zone. 
D)  The hypoxic zone is deadly to marine organisms due to its toxically high oxygen levels.

Question 6

As the rain forest is cleared, the amount of ________ available for organisms to live in is decreased, and this reduces the populations of plants and animals living there-thereby affecting plant and animal ________.

Accepted Answer

A)  habitat; communities 
B)  communities; habitat 
C)  niches; communities 
D)  communities; habitats 
A)  habitat; communities 
B)  communities; habitat 
C)  niches; communities 
D)  communities; habitats

Question 7

The canopy of the rain forest

Accepted Answer

A)  consists of one solid layer of dense leaves. 
B)  is thickest in an upper canopy and thinnest in a lower canopy. 
C)  includes an upper level that is not continuous, with tall trees rising above a more solid middle canopy. 
D)  is typically in a two-canopy arrangement. 
A)  consists of one solid layer of dense leaves. 
B)  is thickest in an upper canopy and thinnest in a lower canopy. 
C)  includes an upper level that is not continuous, with tall trees rising above a more solid middle canopy. 
D)  is typically in a two-canopy arrangement.

Question 8

Why does rapid climate change pose a threat to organisms?

Accepted Answer

A)  Plants may be unable to recolonize an area fast enough to survive. 
B)  Habitat loss will occur for plants. 
C)  Habitat loss will occur for animals that depend on plant ecosystems that are no longer intact. 
D)  Temperature limiting factors may cause some ecosystems and communities to be weakened. 
E)  all of these 
A)  Plants may be unable to recolonize an area fast enough to survive. 
B)  Habitat loss will occur for plants. 
C)  Habitat loss will occur for animals that depend on plant ecosystems that are no longer intact. 
D)  Temperature limiting factors may cause some ecosystems and communities to be weakened. 
E)  all of these

Question 9

Which of the following would be the first to appear following the abandonment of farmland in an oak-hickory forest?

Accepted Answer

A)  hickory trees 
B)  oak trees 
C)  annual weeds 
D)  bushes 
A)  hickory trees 
B)  oak trees 
C)  annual weeds 
D)  bushes

Question 10

Elephants in the savanna regions of Africa dig holes in dried up river beds to reach water lying just below the surface. These holes provide drinking water for other animals as well. So, without the elephants, many animals might otherwise die from lack of water during the dry season. The location in which the elephants live is an example of a/n ________, and the role they play in creating water holes is an example of a ________.

Accepted Answer

A)  niche; habitat 
B)  habitat; niche 
C)  community; niche 
D)  ecosystem; habitat 
A)  niche; habitat 
B)  habitat; niche 
C)  community; niche 
D)  ecosystem; habitat

Question 11

Brazil has taken steps that have greatly slowed the rate of deforestation in that country.

Accepted Answer

A) True 
 B)False

Question 12

Plants in the tundra are ________.

Accepted Answer

A)  tall because of the relatively long growing season 
B)  tall because of competition for light 
C)  short because of the short growing season 
D)  short because not enough moisture is available for normal growth 
E)  both C and D 
A)  tall because of the relatively long growing season 
B)  tall because of competition for light 
C)  short because of the short growing season 
D)  short because not enough moisture is available for normal growth 
E)  both C and D

Question 13

Natural ecosystems are sources of new foods and medicines.

Accepted Answer

A) True 
 B)False

Question 14

If decomposers did not exist, the flow of nutrients would increase and the food chain would expand rapidly.

Accepted Answer

A) True 
 B)False

Question 15

Large, stable, terrestrial and aquatic ecosystems are called biomes.

Accepted Answer

A) True 
 B)False

Question 16

The most diverse body of plants and animals in the world are in the biome designated

Accepted Answer

A)  equatorial and tropical rain forest. 
B)  midlatitude broadleaf and mixed forest. 
C)  tropical savanna. 
D)  midlatitude grasslands. 
A)  equatorial and tropical rain forest. 
B)  midlatitude broadleaf and mixed forest. 
C)  tropical savanna. 
D)  midlatitude grasslands.

Question 17

Alpine tundra, as compared to arctic tundra,

Accepted Answer

A)  is similar in many ways and can occur at lower latitudes due to high elevations. 
B)  is very dissimilar and is only grouped with arctic tundra because they are both cold. 
C)  occurs at extremely high latitudes. 
D)  occurs below the timberline. 
A)  is similar in many ways and can occur at lower latitudes due to high elevations. 
B)  is very dissimilar and is only grouped with arctic tundra because they are both cold. 
C)  occurs at extremely high latitudes. 
D)  occurs below the timberline.

Question 18

The biosphere-reserve effort specifically involves principles of

Accepted Answer

A)  geography. 
B)  biology. 
C)  geology. 
D)  island biogeography. 
A)  geography. 
B)  biology. 
C)  geology. 
D)  island biogeography.

Question 19

Cow birds often land on the backs of cows and pick off ticks and other creatures that feed on the cow. Thus, the birds benefit the cow by removing harmful or irritating bugs, and the cow benefits the bird by providing a food source location. In this situation, the relationship between the ticks and the cow is ________, and that between the cow and the bird is ________.

Accepted Answer

A)  symbiotic; parasitic 
B)  parasitic; symbiotic 
C)  symbiotic; mutualistic 
D)  mutualistic; symbiotic 
A)  symbiotic; parasitic 
B)  parasitic; symbiotic 
C)  symbiotic; mutualistic 
D)  mutualistic; symbiotic

Question 20

Near the subtropical high pressure centers, net primary productivity is limited by

Accepted Answer

A)  sunlight. 
B)  lack of rainfall. 
C)  cold temperatures. 
D)  all of these 
A)  sunlight. 
B)  lack of rainfall. 
C)  cold temperatures. 
D)  all of these

Which of the following results from the competition for sunlight in a plant community?

Which of the following is $\underline { \text { not } }$ part of an ecosystem?

Local names for tropical savanna vary worldwide and include all of the following except

The Arctic National Wildlife Reserve (ANWR)

Which of the following is $\underline {\text { false }}$ regarding the hypoxic zone (Dead Zone) off the coast of Louisiana?

As the rain forest is cleared, the amount of available for organisms to live in is decreased, and this reduces the populations of plants and animals living there-thereby affecting plant and animal .

The canopy of the rain forest

Why does rapid climate change pose a threat to organisms?

Which of the following would be the first to appear following the abandonment of farmland in an oak-hickory forest?

Brazil has taken steps that have greatly slowed the rate of deforestation in that country.

Plants in the tundra are ________.

Natural ecosystems are sources of new foods and medicines.

If decomposers did not exist, the flow of nutrients would increase and the food chain would expand rapidly.

Large, stable, terrestrial and aquatic ecosystems are called biomes.

The most diverse body of plants and animals in the world are in the biome designated

Alpine tundra, as compared to arctic tundra,

The biosphere-reserve effort specifically involves principles of

Near the subtropical high pressure centers, net primary productivity is limited by

Foundations of Geography

Solar Energy, Seasons, and the Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulation

Atmospheric Water and Weather

Water Resources

Global Climate Systems

The Dynamic Planet

Earthquakes and Volcanoes

Weathering, Karst Landscapes, and Mass Movement

Wind Processes and Desert Landscapes

The Oceans, Coastal Processes, and Landforms

Glacial and Penglacial Landscapes

The Geography of Soils

Earth and the Human Denominator

Filters

Exam 16: Ecosystems and Biomes

Which of the following results from the competition for sunlight in a plant community?

Which of the following is not ‾\underline { \text { not } } not ​ part of an ecosystem?

Local names for tropical savanna vary worldwide and include all of the following except

The Arctic National Wildlife Reserve (ANWR)

Which of the following is false ‾\underline {\text { false }} false ​ regarding the hypoxic zone (Dead Zone) off the coast of Louisiana?

As the rain forest is cleared, the amount of ________ available for organisms to live in is decreased, and this reduces the populations of plants and animals living there-thereby affecting plant and animal ________.

The canopy of the rain forest

Why does rapid climate change pose a threat to organisms?

Which of the following would be the first to appear following the abandonment of farmland in an oak-hickory forest?

Brazil has taken steps that have greatly slowed the rate of deforestation in that country.

Plants in the tundra are ________.

Natural ecosystems are sources of new foods and medicines.

If decomposers did not exist, the flow of nutrients would increase and the food chain would expand rapidly.

Large, stable, terrestrial and aquatic ecosystems are called biomes.

The most diverse body of plants and animals in the world are in the biome designated

Alpine tundra, as compared to arctic tundra,

The biosphere-reserve effort specifically involves principles of

Near the subtropical high pressure centers, net primary productivity is limited by

Foundations of Geography

Solar Energy, Seasons, and the Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulation

Atmospheric Water and Weather

Water Resources

Global Climate Systems

The Dynamic Planet

Earthquakes and Volcanoes

Weathering, Karst Landscapes, and Mass Movement

Wind Processes and Desert Landscapes

The Oceans, Coastal Processes, and Landforms

Glacial and Penglacial Landscapes

The Geography of Soils

Earth and the Human Denominator

Filters

Which of the following is $\underline { \text { not } }$ part of an ecosystem?

Which of the following is $\underline {\text { false }}$ regarding the hypoxic zone (Dead Zone) off the coast of Louisiana?

As the rain forest is cleared, the amount of available for organisms to live in is decreased, and this reduces the populations of plants and animals living there-thereby affecting plant and animal .