Question 1

Carbon dioxide is stored through

Accepted Answer

A) plant and animal respiration. 
B) photosynthesis. 
C) volcanic activity. 
D) fossil fuel combustion of industry. 
E) automobile exhaust. 
A) plant and animal respiration. 
B) photosynthesis. 
C) volcanic activity. 
D) fossil fuel combustion of industry. 
E) automobile exhaust. B

Question 2

A leech that sucks blood from an animal is in a mutualistic relationship with that animal.

Accepted Answer

A) True 
 B)False  False

Question 3

Carbon in the ocean is often stored in the form of carbon dioxide and calcium carbonate.

Accepted Answer

A) True 
 B)False  True

Question 4

An ecosystem is a(n)________ system in terms of energy,and a(n)________ system in terms of matter.

Accepted Answer

A) open open 
B) open closed 
C) closed open 
D) closed closed 
A) open open 
B) open closed 
C) closed open 
D) closed closed

Question 5

Today,more than half of the cultivated land in Canada and the United States is planted for animal consumption.This means that far more people are capable of being fed than if the land were planted with crops for direct human consumption.

Accepted Answer

A) True 
 B)False

Question 6

A midlatitude grassland is low in stability,yet shows high resilience when burned.

Accepted Answer

A) True 
 B)False

Question 7

Describe the arguments for and against wildfire suppression.

Accepted Answer

Arguments for wildfire suppression inclu

Question 8

The interacting populations of living animals and plants in an area form a convenient subdivision in nature described as a(n)

Accepted Answer

A) ecosystem. 
B) ecotone. 
C) community. 
D) niche. 
E) biozone. 
A) ecosystem. 
B) ecotone. 
C) community. 
D) niche. 
E) biozone.

Question 9

Thermal stratification in lakes such as the Great Lakes enhances the dilution of pollutants.

Accepted Answer

A) True 
 B)False

Question 10

The seeds of some fruits cannot germinate unless they have first passed through the digestive system of an animal.Given this,the animal plays a role in perpetuating the plant species,and this role can best be considered an example of a trophic level.

Accepted Answer

A) True 
 B)False

Question 11

The greatest pool of carbon on Earth resides in

Accepted Answer

A) the oceans. 
B) living matter. 
C) the atmosphere. 
D) the lithosphere. 
E) permafrost. 
A) the oceans. 
B) living matter. 
C) the atmosphere. 
D) the lithosphere. 
E) permafrost.

Question 12

How do light,temperature,water,and climate affect ecosystems?

Accepted Answer

Light, temperature, water, and climate a

Question 13

Relative to the area surrounding a forest,which of the following is true of a forest-floor microclimate?

Accepted Answer

A) it is cooler in summer and moister. 
B) it is windier and drier. 
C) it is more humid and warmer in summer. 
D) it has less moderated temperatures. 
E) there is no difference in temperature,but it is drier. 
A) it is cooler in summer and moister. 
B) it is windier and drier. 
C) it is more humid and warmer in summer. 
D) it has less moderated temperatures. 
E) there is no difference in temperature,but it is drier.

Question 14

The higher the biodiversity of an ecosystem,the higher the potential stability.

Accepted Answer

A) True 
 B)False

Question 15

What is net primary productivity? Why is it an important concept in ecology?

Accepted Answer

Net primary productivity (NPP) is the ra

Question 16

Photosynthesis and leaf operations involve all of the following:

Accepted Answer

A) stomata,chlorophyll,and moonlight 
B) chlorophyll,chloroplasts,and moonlight 
C) chloroplasts,chlorophyll and stomata. 
D) moonlight,chlorophyll and carbon dioxide. 
E) carbohydrates,moonlight,and chlorophyll 
A) stomata,chlorophyll,and moonlight 
B) chlorophyll,chloroplasts,and moonlight 
C) chloroplasts,chlorophyll and stomata. 
D) moonlight,chlorophyll and carbon dioxide. 
E) carbohydrates,moonlight,and chlorophyll

Question 17

The rate at which energy is stored in organic substances,such as in plants,is

Accepted Answer

A) photosynthetic rate. 
B) respiration rate. 
C) primary productivity. 
D) sugar detention. 
E) growth rate. 
A) photosynthetic rate. 
B) respiration rate. 
C) primary productivity. 
D) sugar detention. 
E) growth rate.

Question 18

Plants remove a relatively insignificant amount of carbon dioxide from the atmosphere.

Accepted Answer

A) True 
 B)False

Question 19

Photosynthesis converts

Accepted Answer

A) heat energy,carbon dioxide,and water into carbohydrates and oxygen. 
B) heat energy,oxygen,and carbohydrates into carbon dioxide and water. 
C) light energy,carbon dioxide,and water into carbohydrates and oxygen. 
D) light energy,oxygen,and carbohydrates into carbon dioxide and water. 
E) heat energy,carbon dioxide and carbohydrates into oxygen and water. 
A) heat energy,carbon dioxide,and water into carbohydrates and oxygen. 
B) heat energy,oxygen,and carbohydrates into carbon dioxide and water. 
C) light energy,carbon dioxide,and water into carbohydrates and oxygen. 
D) light energy,oxygen,and carbohydrates into carbon dioxide and water. 
E) heat energy,carbon dioxide and carbohydrates into oxygen and water.

Question 20

In terms of ecological food pyramids,which of the following is  correct ?

Accepted Answer

A) there are more producers in a temperate forest than there are in a grassland. 
B) a stepped population pyramid is characteristic of most ecosystems in the winter. 
C) generally,there is a decrease in numbers of organisms at each successive trophic level. 
D) it is possible to find a stable ecosystem in which secondary consumers outnumber primary consumers. 
A) there are more producers in a temperate forest than there are in a grassland. 
B) a stepped population pyramid is characteristic of most ecosystems in the winter. 
C) generally,there is a decrease in numbers of organisms at each successive trophic level. 
D) it is possible to find a stable ecosystem in which secondary consumers outnumber primary consumers.

Exam 19: Ecosystem Essentials

Carbon dioxide is stored through

A leech that sucks blood from an animal is in a mutualistic relationship with that animal.

Carbon in the ocean is often stored in the form of carbon dioxide and calcium carbonate.

An ecosystem is a(n)________ system in terms of energy,and a(n)________ system in terms of matter.

Today,more than half of the cultivated land in Canada and the United States is planted for animal consumption.This means that far more people are capable of being fed than if the land were planted with crops for direct human consumption.

A midlatitude grassland is low in stability,yet shows high resilience when burned.

Describe the arguments for and against wildfire suppression.

The interacting populations of living animals and plants in an area form a convenient subdivision in nature described as a(n)

Thermal stratification in lakes such as the Great Lakes enhances the dilution of pollutants.

The seeds of some fruits cannot germinate unless they have first passed through the digestive system of an animal.Given this,the animal plays a role in perpetuating the plant species,and this role can best be considered an example of a trophic level.

The greatest pool of carbon on Earth resides in

How do light,temperature,water,and climate affect ecosystems?

Relative to the area surrounding a forest,which of the following is true of a forest-floor microclimate?

The higher the biodiversity of an ecosystem,the higher the potential stability.

What is net primary productivity? Why is it an important concept in ecology?

Photosynthesis and leaf operations involve all of the following:

The rate at which energy is stored in organic substances,such as in plants,is

Plants remove a relatively insignificant amount of carbon dioxide from the atmosphere.

Photosynthesis converts

In terms of ecological food pyramids,which of the following is correct ?

Essentials of Geography

Solar Energy to Earth and the Seasons

Earth's Modern Atmosphere

Atmosphere and Surface Energy Balances

Global Temperatures

Atmospheric and Oceanic Circulations

Water and Atmospheric Moisture

Weather

Water Resources

Climate Systems and Climate Change

The Dynamic Planet

Tectonics, Earthquakes, and Volcanism

Weathering, Karst Landscapes, and Mass Movement

River Systems and Landforms

Eolian Processes and Arid Landscapes

The Oceans, Coastal Processes, and Landforms

Glacial and Periglacial Processes and Landforms

The Geography of Soils

Terrestrial Biomes

Earth and the Human Denominator

Filters

An ecosystem is a(n) system in terms of energy,and a(n) system in terms of matter.