Question 1

Fires may result in:

Accepted Answer

A)  decreased erosional rates. 
B)  enrichment of the soil. 
C)  decreased soil fertility. 
D)  decreased evaporation from the soil surface. 
E)  increased amounts of organic litter on the soil. 
A)  decreased erosional rates. 
B)  enrichment of the soil. 
C)  decreased soil fertility. 
D)  decreased evaporation from the soil surface. 
E)  increased amounts of organic litter on the soil.

Question 2

MATCHING
Match the component of the nitrogen cycle with its description.
a.assimilation
c.nitrification
b.denitrification
d.nitrogen fixation
-carried out by nitrifying bacteria

Accepted Answer

The answer of MATCHING
Match the component of the nitrogen cycle...

Question 3

The clockwise gyre of surface ocean currents in the North Atlantic results in:

Accepted Answer

A)  warmer water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
B)  cooler water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
C)  a clockwise gyre in the South Atlantic. 
D)  a circumpolar flow of water in the Northern Hemisphere. 
E)  prevailing trade winds. 
A)  warmer water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
B)  cooler water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
C)  a clockwise gyre in the South Atlantic. 
D)  a circumpolar flow of water in the Northern Hemisphere. 
E)  prevailing trade winds.

Question 4

The major atmospheric components of Earth, from the lowest concentration to the greatest concentration, are:

Accepted Answer

A)  carbon dioxide, oxygen, and nitrogen. 
B)  carbon dioxide, nitrogen, and oxygen. 
C)  nitrogen, oxygen, and carbon dioxide. 
D)  nitrogen, carbon dioxide, and oxygen. 
E)  oxygen, nitrogen, and carbon dioxide. 
A)  carbon dioxide, oxygen, and nitrogen. 
B)  carbon dioxide, nitrogen, and oxygen. 
C)  nitrogen, oxygen, and carbon dioxide. 
D)  nitrogen, carbon dioxide, and oxygen. 
E)  oxygen, nitrogen, and carbon dioxide.

Question 5

Denitrifying bacteria:

Accepted Answer

A)  make nitrogen available for assimilation. 
B)  decompose organic nitrogen compounds into nitrate. 
C)  decompose organic nitrogen compounds into ammonia. 
D)  fix nitrogen into ammonia. 
E)  convert nitrate into atmospheric nitrogen. 
A)  make nitrogen available for assimilation. 
B)  decompose organic nitrogen compounds into nitrate. 
C)  decompose organic nitrogen compounds into ammonia. 
D)  fix nitrogen into ammonia. 
E)  convert nitrate into atmospheric nitrogen.

Question 6

What is the significance of bacteria in the genus Rhizobium?

Accepted Answer

A)  They provide fixed carbon dioxide to legumes. 
B)  They provide fixed nitrogen to legumes. 
C)  They carry out photosynthesis. 
D)  They carry out respiration. 
E)  They carry out decomposition.. 
A)  They provide fixed carbon dioxide to legumes. 
B)  They provide fixed nitrogen to legumes. 
C)  They carry out photosynthesis. 
D)  They carry out respiration. 
E)  They carry out decomposition..

Question 7

Pyramids of numbers are of limited usefulness because they:

Accepted Answer

A)  do not indicate the biomass of the organisms at a given time. 
B)  do not indicate the gross primary productivity of each species. 
C)  do not include energy flow through the ecosystem. 
D)  include three trophic levels. 
E)  None of the answer choices is correct. 
A)  do not indicate the biomass of the organisms at a given time. 
B)  do not indicate the gross primary productivity of each species. 
C)  do not include energy flow through the ecosystem. 
D)  include three trophic levels. 
E)  None of the answer choices is correct.

Question 8

Drier climates tend to prevail:

Accepted Answer

A)  on the windward side of mountains. 
B)  in a rain shadow. 
C)  close to the coast of the continent. 
D)  in temperate regions. 
E)  only in the northern hemisphere. 
A)  on the windward side of mountains. 
B)  in a rain shadow. 
C)  close to the coast of the continent. 
D)  in temperate regions. 
E)  only in the northern hemisphere.

Question 9

Nitrogen-fixing bacteria convert gaseous nitrogen into:

Accepted Answer

A)  amino acids. 
B)  phosphate. 
C)  ammonia. 
D)  nitrite. 
E)  nitrate. 
A)  amino acids. 
B)  phosphate. 
C)  ammonia. 
D)  nitrite. 
E)  nitrate.

Question 10

What biome has the highest rate of primary productivity?

Accepted Answer

A)  savanna 
B)  tundra 
C)  algal beds and reefs 
D)  temperate grassland 
E)  tropical rain forest 
A)  savanna 
B)  tundra 
C)  algal beds and reefs 
D)  temperate grassland 
E)  tropical rain forest

Question 11

Which of the following processes plays an important role in the phosphorous cycle?

Accepted Answer

A)  cell respiration 
B)  evaporation 
C)  erosion 
D)  combustion 
E)  transpiration 
A)  cell respiration 
B)  evaporation 
C)  erosion 
D)  combustion 
E)  transpiration

Question 12

Carbon can be returned to the atmosphere by all of the following except:

Accepted Answer

A)  animal respiration. 
B)  photosynthesis. 
C)  combustion. 
D)  plant respiration. 
E)  decomposition. 
A)  animal respiration. 
B)  photosynthesis. 
C)  combustion. 
D)  plant respiration. 
E)  decomposition.

Question 13

MATCHING
Match the component of the nitrogen cycle with its description.
a.assimilation
c.nitrification
b.denitrification
d.nitrogen fixation
-this process occurs in root nodules

Accepted Answer

The answer of MATCHING
Match the component of the nitrogen cycle...

Question 14

The ultimate source of energy for the communities of the hydrothermal vents is provided by:

Accepted Answer

A)  hot seawater. 
B)  sinking detritus from the surface waters. 
C)  photosynthesis. 
D)  chemoautotrophic prokaryotes. 
E)  eel grass. 
A)  hot seawater. 
B)  sinking detritus from the surface waters. 
C)  photosynthesis. 
D)  chemoautotrophic prokaryotes. 
E)  eel grass.

Question 15

Which of the following trophic levels would contain the lowest quantity of energy (kcal per m2)?

Accepted Answer

A)  secondary consumers 
B)  tertiary consumers 
C)  herbivores 
D)  producers 
E)  primary consumers 
A)  secondary consumers 
B)  tertiary consumers 
C)  herbivores 
D)  producers 
E)  primary consumers

Question 16

ENSO refers to a periodic warming of surface ocean waters.
____________________

Accepted Answer

A) True 
 B)False

Question 17

A linear depiction of energy flow in an ecosystem is:

Accepted Answer

A)  a food web. 
B)  a food chain. 
C)  a trophic web. 
D)  an ecological pyramid. 
E)  a pyramid of numbers. 
A)  a food web. 
B)  a food chain. 
C)  a trophic web. 
D)  an ecological pyramid. 
E)  a pyramid of numbers.

Question 18

Net primary productivity represents:

Accepted Answer

A)  the rate at which energy is captured during photosynthesis. 
B)  the amount of biomass in excess of that needed to support plant cell respiration. 
C)  the amount of carbon dioxide produced by plants. 
D)  plant reproduction per unit area per unit time. 
E)  energy production in an area per unit time. 
A)  the rate at which energy is captured during photosynthesis. 
B)  the amount of biomass in excess of that needed to support plant cell respiration. 
C)  the amount of carbon dioxide produced by plants. 
D)  plant reproduction per unit area per unit time. 
E)  energy production in an area per unit time.

Question 19

The seasons are determined primarily by the Earth's tilt.
____________________

Accepted Answer

A) True 
 B)False

Question 20

A decomposer is also called a saprotroph.
____________________

Accepted Answer

A) True 
 B)False

Exam 55: Ecosystems and the Biosphere

Fires may result in:

MATCHING Match the component of the nitrogen cycle with its description. a.assimilation c.nitrification b.denitrification d.nitrogen fixation -carried out by nitrifying bacteria

The clockwise gyre of surface ocean currents in the North Atlantic results in:

The major atmospheric components of Earth, from the lowest concentration to the greatest concentration, are:

Denitrifying bacteria:

What is the significance of bacteria in the genus Rhizobium?

Pyramids of numbers are of limited usefulness because they:

Drier climates tend to prevail:

Nitrogen-fixing bacteria convert gaseous nitrogen into:

What biome has the highest rate of primary productivity?

Which of the following processes plays an important role in the phosphorous cycle?

Carbon can be returned to the atmosphere by all of the following except:

MATCHING Match the component of the nitrogen cycle with its description. a.assimilation c.nitrification b.denitrification d.nitrogen fixation -this process occurs in root nodules

The ultimate source of energy for the communities of the hydrothermal vents is provided by:

Which of the following trophic levels would contain the lowest quantity of energy (kcal per m2)?

ENSO refers to a periodic warming of surface ocean waters. ____________________

A linear depiction of energy flow in an ecosystem is:

Net primary productivity represents:

The seasons are determined primarily by the Earth's tilt. ____________________

A decomposer is also called a saprotroph. ____________________

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

Which of the following trophic levels would contain the lowest quantity of energy (kcal per m²)?