Question 1

Blight fungus kills U.S. chestnut trees because the trees _______________

Accepted Answer

A) release the fungus into the soil and it is drawn up in the roots 
B) release the fungus in the leaves that fall to the ground and the fungus is absorbed in the soil 
C) have not coevolved with the fungus 
D) are hosts to the vectors of the fungus 
E) have not matured long enough to survive 
A) release the fungus into the soil and it is drawn up in the roots 
B) release the fungus in the leaves that fall to the ground and the fungus is absorbed in the soil 
C) have not coevolved with the fungus 
D) are hosts to the vectors of the fungus 
E) have not matured long enough to survive

Question 2

Define the term invasive species and give two examples from your textbook.

Accepted Answer

Invasive species originate from ecosyste

Question 3

Which of the following are pioneer species?

Accepted Answer

A) lichens 
B) zebra mussels 
C) wolves and mountain lions 
D) beavers 
E) aspen trees 
A) lichens 
B) zebra mussels 
C) wolves and mountain lions 
D) beavers 
E) aspen trees

Question 4

The energy content and biomass of ______________ is lowest in any food web.

Accepted Answer

A) detritivores and decomposers 
B) small carnivores such as spiders and lizards 
C) top carnivores 
D) primary consumers 
E) producers 
A) detritivores and decomposers 
B) small carnivores such as spiders and lizards 
C) top carnivores 
D) primary consumers 
E) producers

Question 5

Discuss ways to control invasive species.

Accepted Answer

Controlling and eradicating invasive spe

Question 6

The statement, "hiking up a mountain in the southwestern United States is like walking from Mexico to Canada," refers to the fact _______________ that

Accepted Answer

A) levels of industrial air pollutants 
B) human population density 
C) oxygen levels 
D) vegetation 
E) carbon dioxide levels 
A) levels of industrial air pollutants 
B) human population density 
C) oxygen levels 
D) vegetation 
E) carbon dioxide levels

Question 7

Which terrestrial biome has the most biodiversity?

Accepted Answer

A) temperate rainforest 
B) prairie 
C) tropical rainforest 
D) boreal forest 
E) temperate deciduous forest 
A) temperate rainforest 
B) prairie 
C) tropical rainforest 
D) boreal forest 
E) temperate deciduous forest

Question 8

Desert and tundra both _______________

Accepted Answer

A) have wide temperature variations throughout the year 
B) lack insects 
C) have relatively low precipitation 
D) lack shrubs 
E) have lithosols 
A) have wide temperature variations throughout the year 
B) lack insects 
C) have relatively low precipitation 
D) lack shrubs 
E) have lithosols

Question 9

Why do ecologists favor the term food web as opposed to food chain?

Accepted Answer

Ecological systems are far more complex

Question 10

Which biome would be found primarily in the temperate zone?

Accepted Answer

A) boreal forest 
B) tundra 
C) desert 
D) deciduous forest 
E) savanna 
A) boreal forest 
B) tundra 
C) desert 
D) deciduous forest 
E) savanna

Question 11

Discuss the two factors that are most important in the distribution of biomes. Choose one biome and explain how these two factors impact the specific plants and animals found in this biome.

Accepted Answer

Temperature and precipitation are the tw

Question 12

Grazing animals such as deer are _______________

Accepted Answer

A) producers 
B) detritivores 
C) decomposers 
D) secondary consumers 
E) primary consumers 
A) producers 
B) detritivores 
C) decomposers 
D) secondary consumers 
E) primary consumers

Question 13

Describes Cairo, Egypt, and northwest Mexico; characterized by sparse rainfall and much variation in temperature

Accepted Answer

A) tropical rainforest 
B) temperate deciduous forest 
C) tropical dry forest 
D) temperate grassland 
E) boreal forest
F)savanna
G)chaparral
H)desert
I)temperate rainforest 
A) tropical rainforest 
B) temperate deciduous forest 
C) tropical dry forest 
D) temperate grassland 
E) boreal forest
F)savanna
G)chaparral
H)desert
I)temperate rainforest

Question 14

Read the following scenario and answer the question below
Human activities, including fossil fuel combustion, farming, and deforestation, are known to increase the levels of carbon dioxide, methane, and nitrous oxides in our atmosphere. Measurable warming of Earth due to these greenhouse gases can alter ecosystem dynamics. In addition to the direct climatic effects on organisms within biomes, warming can lower levels of sea ice and increase precipitation in Arctic areas. Global warming also can melt permafrost in the tundra and increase sea surface temperatures, which could increase the intensity of hurricanes in vulnerable areas. Within communities, climatic change can shift interdependent species "out of sync," potentially causing indirect loss of species. For example, if pollinators and the plants they pollinate become out of synch, the pollinators may not be able to use a different food source, and the plants may not be able to reproduce.
-Intense hurricanes resulting from global warming can directly lead to _______________ within communities.

Accepted Answer

A) coevolution 
B) secondary succession 
C) facilitation 
D) primary succession 
E) climax 
A) coevolution 
B) secondary succession 
C) facilitation 
D) primary succession 
E) climax

Question 15

Discuss the differences between intraspecific and interspecific competition.

Accepted Answer

Intraspecific competition is the competi

Question 16

Read the following scenario and answer the question below
Human activities, including fossil fuel combustion, farming, and deforestation, are known to increase the levels of carbon dioxide, methane, and nitrous oxides in our atmosphere. Measurable warming of Earth due to these greenhouse gases can alter ecosystem dynamics. In addition to the direct climatic effects on organisms within biomes, warming can lower levels of sea ice and increase precipitation in Arctic areas. Global warming also can melt permafrost in the tundra and increase sea surface temperatures, which could increase the intensity of hurricanes in vulnerable areas. Within communities, climatic change can shift interdependent species "out of sync," potentially causing indirect loss of species. For example, if pollinators and the plants they pollinate become out of synch, the pollinators may not be able to use a different food source, and the plants may not be able to reproduce.
-The relationship between flowering plants and bees is best described as .

Accepted Answer

A) mutualism 
B) competition 
C) predation 
D) herbivory 
E) parasitism 
A) mutualism 
B) competition 
C) predation 
D) herbivory 
E) parasitism

Question 17

Individuals of a single species fighting over access to a limiting resource would be an example of ______________

Accepted Answer

A) symbiosis 
B) resource partitioning 
C) interspecific competition 
D) competitive exclusion 
E) intraspecific competition 
A) symbiosis 
B) resource partitioning 
C) interspecific competition 
D) competitive exclusion 
E) intraspecific competition

Question 18

Microbes in our digestive tract that help us digest food demonstrate a(n) ______________ association.

Accepted Answer

A) symbiotic 
B) parasitic 
C) homeopathic 
D) benthic 
E) allelopathic 
A) symbiotic 
B) parasitic 
C) homeopathic 
D) benthic 
E) allelopathic

Question 19

Temperature remains relatively stable through the seasons in what biome?

Accepted Answer

A) temperate deciduous forest 
B) temperate grassland 
C) boreal forest 
D) chaparral 
E) tropical rainforest 
A) temperate deciduous forest 
B) temperate grassland 
C) boreal forest 
D) chaparral 
E) tropical rainforest

Question 20

_______________ capture solar energy and use photosynthesis to produce sugars.

Accepted Answer

A) Detritivores 
B) Primary consumers 
C) Heterotrophs 
D) Producers 
E) Secondary consumers 
A) Detritivores 
B) Primary consumers 
C) Heterotrophs 
D) Producers 
E) Secondary consumers

Exam 4: Species Interactions and Community Ecology

Blight fungus kills U.S. chestnut trees because the trees _______________

Define the term invasive species and give two examples from your textbook.

Which of the following are pioneer species?

The energy content and biomass of ______________ is lowest in any food web.

Discuss ways to control invasive species.

The statement, "hiking up a mountain in the southwestern United States is like walking from Mexico to Canada," refers to the fact _______________ that

Which terrestrial biome has the most biodiversity?

Desert and tundra both _______________

Why do ecologists favor the term food web as opposed to food chain?

Which biome would be found primarily in the temperate zone?

Discuss the two factors that are most important in the distribution of biomes. Choose one biome and explain how these two factors impact the specific plants and animals found in this biome.

Grazing animals such as deer are _______________

Describes Cairo, Egypt, and northwest Mexico; characterized by sparse rainfall and much variation in temperature

Discuss the differences between intraspecific and interspecific competition.

Individuals of a single species fighting over access to a limiting resource would be an example of ______________

Microbes in our digestive tract that help us digest food demonstrate a(n) ______________ association.

Temperature remains relatively stable through the seasons in what biome?

_______________ capture solar energy and use photosynthesis to produce sugars.

Science and Sustainability: an Introduction to Environmental Science

Earths Physical Systems: Matter, Energy, and Geology

Evolution, Biodiversity, and Population Ecology

Environmental Systems and Ecosystem Ecology

Ethics, Economics, and Sustainable Development

Environmental Policy: Making Decisions and Solving Problems

Human Population

Soil and Agriculture

Agriculture, Biotechnology, and the Future of Food

Biodiversity and Conservation Biology

Forests, Forest Management, and Protected Areas

The Urban Environment: Creating Sustainable Cities

Environmental Health and Toxicology

Freshwater Systems and Resources

Marine and Coastal Systems and Resources

Atmospheric Science, Air Quality, and Pollution Control

Global Climate Change

Fossil Fuels, Their Impacts, and Energy Conservation

Conventional Energy Alternatives

New Renewable Energy Alternatives

Managing Our Waste

Minerals and Mining

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