Question 1

Which ecosystem has the lowest level of kilocalories per square metre per year?

Accepted Answer

A)  open ocean 
B)  tropical rain forest 
C)  lakes and streams 
D)  agricultural land 
A)  open ocean 
B)  tropical rain forest 
C)  lakes and streams 
D)  agricultural land

Question 2

PROFILE
  
-Which letter in the diagram indicates the process that is part of a natural distillation process which removes impurities dissolved in water?

Accepted Answer

The answer of PROFILE
  
-Which letter in the diagram...

Question 3

Which service is most likely to be performed by the insect family?

Accepted Answer

A)  plant pollination 
B)  chemosynthesis 
C)  soil compaction 
D)  plant growth 
A)  plant pollination 
B)  chemosynthesis 
C)  soil compaction 
D)  plant growth

Question 4

What is a defining characteristic of energy?

Accepted Answer

A)  It is used over and over again. 
B)  It tends to be concentrated by living organisms. 
C)  It recycles through the ecosystem. 
D)  It flows in only one direction. 
A)  It is used over and over again. 
B)  It tends to be concentrated by living organisms. 
C)  It recycles through the ecosystem. 
D)  It flows in only one direction.

Question 5

SOIL
  
-Which letter in the diagram indicates the deepest layer of mature soil?

Accepted Answer

The answer of SOIL
  
-Which letter in the diagram...

Question 6

What are the two ways that humans have most interfered with the carbon cycle?

Accepted Answer

A)  burning fossil fuels and removal of forests and brush 
B)  aerobic respiration and burning fossil fuels 
C)  respiration and photosynthesis 
D)  removal of forests and aerobic respiration 
A)  burning fossil fuels and removal of forests and brush 
B)  aerobic respiration and burning fossil fuels 
C)  respiration and photosynthesis 
D)  removal of forests and aerobic respiration

Question 7

Which statement defines net primary productivity?

Accepted Answer

A)  It is the rate at which producers use chemical energy through respiration. 
B)  It is the rate of photosynthesis plus the rate of respiration. 
C)  It is the net rate at which producers convert sugar into biomass. 
D)  It is the rate at which producers manufacture chemical energy through photosynthesis. 
A)  It is the rate at which producers use chemical energy through respiration. 
B)  It is the rate of photosynthesis plus the rate of respiration. 
C)  It is the net rate at which producers convert sugar into biomass. 
D)  It is the rate at which producers manufacture chemical energy through photosynthesis.

Question 8

Which soil type holds the most water?

Accepted Answer

A)  sand 
B)  clay 
C)  loam 
D)  silt 
A)  sand 
B)  clay 
C)  loam 
D)  silt

Question 9

The lithosphere consists of the Earth's crust and upper mantle.

Accepted Answer

A) True 
 B)False

Question 10

A deer is a primary consumer and it is in the second trophic level.

Accepted Answer

A) True 
 B)False

Question 11

What is one physical property of clay?

Accepted Answer

A)  good nutrient-holding capacity 
B)  good aeration 
C)  good water infiltration 
D)  good water-holding capacity 
A)  good nutrient-holding capacity 
B)  good aeration 
C)  good water infiltration 
D)  good water-holding capacity

Question 12

What is the thin,gaseous layer of air around a planet?

Accepted Answer

A)  atmosphere 
B)  hydrosphere 
C)  lithosphere 
D)  stratosphere 
A)  atmosphere 
B)  hydrosphere 
C)  lithosphere 
D)  stratosphere

Question 13

Which organism lives off remains or wastes of organisms?

Accepted Answer

A)  herbivore 
B)  omnivore 
C)  scavenger 
D)  carnivore 
A)  herbivore 
B)  omnivore 
C)  scavenger 
D)  carnivore

Question 14

What consists of freshly fallen leaves,organic debris,and partially decomposed organic matter?

Accepted Answer

A)  zone of leaching 
B)  surface litter 
C)  subsoil 
D)  parent material 
A)  zone of leaching 
B)  surface litter 
C)  subsoil 
D)  parent material

Question 15

What is one of the common phosphorus reservoirs in the ecosystem?

Accepted Answer

A)  water 
B)  air 
C)  organisms 
D)  atmosphere 
A)  water 
B)  air 
C)  organisms 
D)  atmosphere

Question 16

FOOD WEB
  
-In the diagram,which animal is at the fifth trophic level?

Accepted Answer

The answer of FOOD WEB
  
-In the diagram,which animal...

Question 17

Which soil type has the most pore space?

Accepted Answer

A)  clay 
B)  silt 
C)  sand 
D)  loam 
A)  clay 
B)  silt 
C)  sand 
D)  loam

Question 18

Which term refers to a large ecological region with a distinct climate and specific species adapted to it?

Accepted Answer

A)  biome 
B)  population 
C)  community 
D)  ecosystem 
A)  biome 
B)  population 
C)  community 
D)  ecosystem

Question 19

In which of the following are fossil fuels and minerals found?

Accepted Answer

A)  hydrosphere 
B)  lithosphere 
C)  biosphere 
D)  atmosphere 
A)  hydrosphere 
B)  lithosphere 
C)  biosphere 
D)  atmosphere

Question 20

The ecological efficiency at each trophic level of a particular ecosystem is 10%.If the green plants of the ecosystem capture 1000 units of energy,which pair of numbers approximates the units of energy that will be available to support herbivores and the units of energy that will be available to support carnivores?

Accepted Answer

A)  100; 10 
B)  1 000; 100 
C)  10; 1 
D)  100; 100 
A)  100; 10 
B)  1 000; 100 
C)  10; 1 
D)  100; 100

Exam 4: Ecosystems: What Are They, and How Do They Work

Which ecosystem has the lowest level of kilocalories per square metre per year?

PROFILE -Which letter in the diagram indicates the process that is part of a natural distillation process which removes impurities dissolved in water?

Which service is most likely to be performed by the insect family?

What is a defining characteristic of energy?

SOIL -Which letter in the diagram indicates the deepest layer of mature soil?

What are the two ways that humans have most interfered with the carbon cycle?

Which statement defines net primary productivity?

Which soil type holds the most water?

The lithosphere consists of the Earth's crust and upper mantle.

A deer is a primary consumer and it is in the second trophic level.

What is one physical property of clay?

What is the thin,gaseous layer of air around a planet?

Which organism lives off remains or wastes of organisms?

What consists of freshly fallen leaves,organic debris,and partially decomposed organic matter?

What is one of the common phosphorus reservoirs in the ecosystem?

FOOD WEB -In the diagram,which animal is at the fifth trophic level?

Which soil type has the most pore space?

Which term refers to a large ecological region with a distinct climate and specific species adapted to it?

In which of the following are fossil fuels and minerals found?

Environmental Problems: an Introduction and Overview

Environmental History: Learning From the Past

Science, systems, matter, and Energy

Evolution and Biodiversity

Climate and Terrestrial Biodiversity

Aquatic Biodiversity

Community Ecology

Population Ecology

Applying Population Ecology: the Human Population

Sustaining Terrestrial Biodiversity: Managing and Protecting Ecosystems

Sustaining Biodiversity: the Species Approach

Sustaining Aquatic Biodiversity

Food and Soil Resources

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy Resources

Energy Efficiency and Renewable Energy

Risk,toxicology,and Human Health

Air Pollution

Climate Change and Ozone Loss

Water Pollution

Pest Management

Solid and Hazardous Waste

Sustainable Cities

Economics, environment, and Sustainability

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Environmental World-views, ethics, and Sustainability

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