Question 1

Provide an example of each of the following symbiotic relationships: mutualism,parasitism,commensalism,and amensalism.

Accepted Answer

Mutualism should be an example where bot

Question 2

The energy that powers the biosphere comes primarily from

Accepted Answer

A) the Sun. 
B) soil nutrients. 
C) abiotic chemical reactions. 
D) fluvial action. 
E) endogenic processes. 
A) the Sun. 
B) soil nutrients. 
C) abiotic chemical reactions. 
D) fluvial action. 
E) endogenic processes.

Question 3

Human-built or human-modified ecosystems that may have species and habitats that have never occurred together,designed to conserve biodiversity,are known as

Accepted Answer

A) patch dynamics. 
B) seres. 
C) anthropocenes. 
D) ecological successions. 
E) novel ecosystems. 
A) patch dynamics. 
B) seres. 
C) anthropocenes. 
D) ecological successions. 
E) novel ecosystems.

Question 4

The gradual nutrient enrichment of water bodies is known as

Accepted Answer

A) patch dynamics. 
B) ecological succession. 
C) mesotrophication. 
D) oligotrophication. 
E) eutrophication. 
A) patch dynamics. 
B) ecological succession. 
C) mesotrophication. 
D) oligotrophication. 
E) eutrophication.

Question 5

Currently,approximately ____of cultivated acreage in the United States and Canada is planted for animal consumption

Accepted Answer

A) 15% 
B) 30% 
C) 50% 
D) 65% 
E) 75% 
A) 15% 
B) 30% 
C) 50% 
D) 65% 
E) 75%

Question 6

Using Figure 19.3 and Table 19.1 as your guide,describe the net primary productivity of the area in which you live.How does this net primary productivity vary across your state (or equivalent)and broader region?

Accepted Answer

The answer will vary depending on the lo

Question 7

According to a recent study,species are going extinct at a rate ____times faster than natural pre-human extinction rates.

Accepted Answer

A) 5 
B) 10 
C) 50 
D) 100 
E) 1000 
A) 5 
B) 10 
C) 50 
D) 100 
E) 1000

Question 8

Which of the following is not an example of an abiotic component of an ecosystem?

Accepted Answer

A) plants 
B) sunlight 
C) precipitation 
D) mineral nutrients 
E) atmospheric gases 
A) plants 
B) sunlight 
C) precipitation 
D) mineral nutrients 
E) atmospheric gases

Question 9

In coral reefs,clownfish live unharmed among the poisonous tentacles of sea anemones.The sea anemones protect the clownfish from predation,while the clownfish scare off predators,such butterfly fish,which would otherwise eat the anemones.The clownfish may also provide important nutrients to the anemones.This is an example of which symbiotic relationship?

Accepted Answer

A) parasitism 
B) mutualism 
C) commensalism 
D) amensalism 
E) synnecrosis 
A) parasitism 
B) mutualism 
C) commensalism 
D) amensalism 
E) synnecrosis

Question 10

A study of the dietary requirements of African bush elephants (Loxodonta africana)in a savanna environment,and the role the elephants play in that environment,would be an example of a topic studied in

Accepted Answer

A) biogeography. 
B) ecology. 
C) pedology. 
D) plant biology. 
E) phytogeography. 
A) biogeography. 
B) ecology. 
C) pedology. 
D) plant biology. 
E) phytogeography.

Question 11

____occurs when the last individual of a species dies.

Accepted Answer

A) Speciation 
B) Vicariance 
C) Symbiosis 
D) Extinction 
E) Adaptation 
A) Speciation 
B) Vicariance 
C) Symbiosis 
D) Extinction 
E) Adaptation

Question 12

What is biogeography? What subjects do biogeographers study? What is ecology? How does biogeography vary from ecology?

Accepted Answer

Biogeography is the study of the distrib

Question 13

The first photosynthesizing bacteria appeared in the ocean on Earth about ___years ago.

Accepted Answer

A) 14 million 
B) 323 million 
C) 769 million 
D) 1.3 billion 
E) 2.7 billion 
A) 14 million 
B) 323 million 
C) 769 million 
D) 1.3 billion 
E) 2.7 billion

Question 14

What are the major threats to biodiversity in the coming decades? Explain your selections.

Accepted Answer

Answers might include species

Question 15

Consider the ecology of the region in which you live.Which organisms are the primary producers,the primary consumers,the secondary consumers,and tertiary consumers?

Accepted Answer

Answers will vary.Students' answers shou

Question 16

In which of the following terrestrial ecosystems would one tend to find the lowest net primary productivity?

Accepted Answer

A) extreme desert 
B) woodland and shrubland 
C) tundra 
D) cultivated lands 
E) tropical seasonal forest 
A) extreme desert 
B) woodland and shrubland 
C) tundra 
D) cultivated lands 
E) tropical seasonal forest

Question 17

6CO2 + 6H2O + Light → C6H12O6 + 6O2 is the generalized equation for

Accepted Answer

A) respiration. 
B) photosynthesis. 
C) chemosynthesis. 
D) transpiration. 
E) evaporation. 
A) respiration. 
B) photosynthesis. 
C) chemosynthesis. 
D) transpiration. 
E) evaporation.

Question 18

The study of the interrelationships between organisms and their environment is called

Accepted Answer

A) biology. 
B) ecology. 
C) pedology. 
D) biogeography. 
E) zoology. 
A) biology. 
B) ecology. 
C) pedology. 
D) biogeography. 
E) zoology.

Question 19

The specific,unique role that a species performs within a given area is known as a(n)

Accepted Answer

A) ecotone. 
B) habitat. 
C) community. 
D) niche. 
E) trophic level. 
A) ecotone. 
B) habitat. 
C) community. 
D) niche. 
E) trophic level.

Question 20

The variation of life encompassing species diversity,genetic diversity,and ecosystem diversity is known as

Accepted Answer

A) commensalism. 
B) ecological niche. 
C) trophic pyramids. 
D) limiting factor. 
E) biodiversity. 
A) commensalism. 
B) ecological niche. 
C) trophic pyramids. 
D) limiting factor. 
E) biodiversity.

Provide an example of each of the following symbiotic relationships: mutualism,parasitism,commensalism,and amensalism.

The energy that powers the biosphere comes primarily from

Human-built or human-modified ecosystems that may have species and habitats that have never occurred together,designed to conserve biodiversity,are known as

The gradual nutrient enrichment of water bodies is known as

Currently,approximately ____of cultivated acreage in the United States and Canada is planted for animal consumption

Using Figure 19.3 and Table 19.1 as your guide,describe the net primary productivity of the area in which you live.How does this net primary productivity vary across your state (or equivalent)and broader region?

According to a recent study,species are going extinct at a rate ____times faster than natural pre-human extinction rates.

Which of the following is not an example of an abiotic component of an ecosystem?

A study of the dietary requirements of African bush elephants (Loxodonta africana)in a savanna environment,and the role the elephants play in that environment,would be an example of a topic studied in

____occurs when the last individual of a species dies.

What is biogeography? What subjects do biogeographers study? What is ecology? How does biogeography vary from ecology?

The first photosynthesizing bacteria appeared in the ocean on Earth about ___years ago.

What are the major threats to biodiversity in the coming decades? Explain your selections.

Consider the ecology of the region in which you live.Which organisms are the primary producers,the primary consumers,the secondary consumers,and tertiary consumers?

In which of the following terrestrial ecosystems would one tend to find the lowest net primary productivity?

6CO2 + 6H2O + Light → C6H12O6 + 6O2 is the generalized equation for

The study of the interrelationships between organisms and their environment is called

The specific,unique role that a species performs within a given area is known as a(n)

The variation of life encompassing species diversity,genetic diversity,and ecosystem diversity is known as

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth’s Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Earth’s Climatic Regions

Climate Change

The Dynamic Planet

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems

Aeolian Processes and Arid Landscapes

Oceans and Coastal Systems

Glacial Landscapes and the Cryosphere

The Geography of Soils

Terrestrial Biomes

Filters

Exam 19: Ecosystem Essentials

Provide an example of each of the following symbiotic relationships: mutualism,parasitism,commensalism,and amensalism.

The energy that powers the biosphere comes primarily from

Human-built or human-modified ecosystems that may have species and habitats that have never occurred together,designed to conserve biodiversity,are known as

The gradual nutrient enrichment of water bodies is known as

Currently,approximately ____of cultivated acreage in the United States and Canada is planted for animal consumption

Using Figure 19.3 and Table 19.1 as your guide,describe the net primary productivity of the area in which you live.How does this net primary productivity vary across your state (or equivalent)and broader region?

According to a recent study,species are going extinct at a rate ____times faster than natural pre-human extinction rates.

Which of the following is not an example of an abiotic component of an ecosystem?

A study of the dietary requirements of African bush elephants (Loxodonta africana)in a savanna environment,and the role the elephants play in that environment,would be an example of a topic studied in

____occurs when the last individual of a species dies.

What is biogeography? What subjects do biogeographers study? What is ecology? How does biogeography vary from ecology?

The first photosynthesizing bacteria appeared in the ocean on Earth about ___years ago.

What are the major threats to biodiversity in the coming decades? Explain your selections.

Consider the ecology of the region in which you live.Which organisms are the primary producers,the primary consumers,the secondary consumers,and tertiary consumers?

In which of the following terrestrial ecosystems would one tend to find the lowest net primary productivity?

6CO2 + 6H2O + Light → C6H12O6 + 6O2 is the generalized equation for

The study of the interrelationships between organisms and their environment is called

The specific,unique role that a species performs within a given area is known as a(n)

The variation of life encompassing species diversity,genetic diversity,and ecosystem diversity is known as

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth’s Atmosphere

Atmospheric Energy and Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Earth’s Climatic Regions

Climate Change

The Dynamic Planet

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems

Aeolian Processes and Arid Landscapes

Oceans and Coastal Systems

Glacial Landscapes and the Cryosphere

The Geography of Soils

Terrestrial Biomes

Filters