Question 1

Energy can be depleted within an ecosystem.

Accepted Answer

A) True 
 B)False

Question 2

In ______,multiple species use the same resource in a slightly different way or at a different time.

Accepted Answer

A) symbiotic inclusion 
B) resource partitioning 
C) mutualism 
D) intraspecific competition 
E) None of the answers are correct. 
A) symbiotic inclusion 
B) resource partitioning 
C) mutualism 
D) intraspecific competition 
E) None of the answers are correct.

Question 3

The diversity in a mangrove marsh community is high if

Accepted Answer

A) the proportion of red mangroves,white mangroves,and black mangroves is equal. 
B) the proportion of red mangroves is far greater than white mangroves and black mangroves. 
C) there are a few species of mangroves,a few species of invertebrate animals,and a few species of vertebrate animals. 
D) All answers are correct. 
A) the proportion of red mangroves,white mangroves,and black mangroves is equal. 
B) the proportion of red mangroves is far greater than white mangroves and black mangroves. 
C) there are a few species of mangroves,a few species of invertebrate animals,and a few species of vertebrate animals. 
D) All answers are correct.

Question 4

Zooplankton are which of the following?

Accepted Answer

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

Question 5

Some scientists predict that as atmospheric carbon dioxide levels increase,the pH of the oceans will drop,threatening coral and organisms with shells.What is the best explanation for this hypothesis?

Accepted Answer

A) Carbon dioxide combines with water to form a base. 
B) Carbon dioxide combines with water to form an acid. 
C) As the pH of the ocean decreases,more carbon dioxide is released into the atmosphere. 
D) As the pH of the ocean increases,more carbon dioxide is released into the atmosphere. 
E) As the oceans warm,more water is evaporated,lowering the pH of the remaining water. 
A) Carbon dioxide combines with water to form a base. 
B) Carbon dioxide combines with water to form an acid. 
C) As the pH of the ocean decreases,more carbon dioxide is released into the atmosphere. 
D) As the pH of the ocean increases,more carbon dioxide is released into the atmosphere. 
E) As the oceans warm,more water is evaporated,lowering the pH of the remaining water.

Question 6

An insect that resembles leaves is using ______ to avoid predation.

Accepted Answer

A) camouflage 
B) warning coloration 
C) mimicry 
D) chemical defense 
E) mutualism 
A) camouflage 
B) warning coloration 
C) mimicry 
D) chemical defense 
E) mutualism

Question 7

All the organisms plus the nonliving components of a defined area is a(n)

Accepted Answer

A) population. 
B) community. 
C) ecosystem. 
D) habitat. 
E) nichE. 
A) population. 
B) community. 
C) ecosystem. 
D) habitat. 
E) nichE.

Question 8

The ______ cycle begins with the weathering of rock.

Accepted Answer

A) phosphorus 
B) nitrogen 
C) water 
D) energy 
E) carbon 
A) phosphorus 
B) nitrogen 
C) water 
D) energy 
E) carbon

Question 9

Species that are the first to colonize an area are termed

Accepted Answer

A) keystone species. 
B) primary species. 
C) tertiary species. 
D) pioneer species. 
E) secondary species. 
A) keystone species. 
B) primary species. 
C) tertiary species. 
D) pioneer species. 
E) secondary species.

Question 10

Coral and the algae which live inside the coral tissues are an example of

Accepted Answer

A) mutualism. 
B) commensalism. 
C) parasitism. 
D) predation. 
E) competition. 
A) mutualism. 
B) commensalism. 
C) parasitism. 
D) predation. 
E) competition.

Question 11

A species that is so important to its community that its removal can dismantle a food web (such as sea otters)is termed a

Accepted Answer

A) capstone species. 
B) flagstone species. 
C) cobblestone species. 
D) cornerstone species. 
E) keystone species. 
A) capstone species. 
B) flagstone species. 
C) cobblestone species. 
D) cornerstone species. 
E) keystone species.

Question 12

Raw sewage within a water ecosystem can cause fish kills because respiration by the microbes in the sewage reduces the concentration of oxygen within the water.

Accepted Answer

A) True 
 B)False

Question 13

Nitrogen-fixing bacteria convert N2 into

Accepted Answer

A) nitrates. 
B) ammonium ions. 
C) nitrites. 
D) carbon dioxide. 
E) methanE. 
A) nitrates. 
B) ammonium ions. 
C) nitrites. 
D) carbon dioxide. 
E) methanE.

Question 14

Trees that lose only a few leaves at a time are

Accepted Answer

A) deciduous trees. 
B) carnivorous trees. 
C) maple trees. 
D) hickory trees. 
E) coniferous trees. 
A) deciduous trees. 
B) carnivorous trees. 
C) maple trees. 
D) hickory trees. 
E) coniferous trees.

Question 15

Energy flows in only one direction through an ecosystem,rather than being recycled.

Accepted Answer

A) True 
 B)False

Question 16

In the water cycle,animals return water to the environment by

Accepted Answer

A) both transpiration and excretion. 
B) excretion only. 
C) transpiration only 
D) both respiration and excretion 
E) excretion only.. 
A) both transpiration and excretion. 
B) excretion only. 
C) transpiration only 
D) both respiration and excretion 
E) excretion only..

Question 17

Abiotic components of an ecosystem include

Accepted Answer

A) living components only. 
B) both nonliving and living components. 
C) only plant life. 
D) nonliving components only. 
E) only animal lifE. 
A) living components only. 
B) both nonliving and living components. 
C) only plant life. 
D) nonliving components only. 
E) only animal lifE.

Question 18

Desert plants often have

Accepted Answer

A) broad leaves. 
B) thick vines. 
C) long taproots. 
D) shallow roots. 
E) soft bark. 
A) broad leaves. 
B) thick vines. 
C) long taproots. 
D) shallow roots. 
E) soft bark.

Question 19

A network of interconnected food chains is a food web.

Accepted Answer

A) True 
 B)False

Question 20

The Boundary Waters Canoe Area (BWCA)is an example of which biome?

Accepted Answer

A) boreal forest 
B) tropical rainforest 
C) short grass prairie 
D) tundra 
E) temperate rainforest 
A) boreal forest 
B) tropical rainforest 
C) short grass prairie 
D) tundra 
E) temperate rainforest

Exam 19: Communities and Ecosystems

Energy can be depleted within an ecosystem.

In ______,multiple species use the same resource in a slightly different way or at a different time.

The diversity in a mangrove marsh community is high if

Zooplankton are which of the following?

Some scientists predict that as atmospheric carbon dioxide levels increase,the pH of the oceans will drop,threatening coral and organisms with shells.What is the best explanation for this hypothesis?

An insect that resembles leaves is using ______ to avoid predation.

All the organisms plus the nonliving components of a defined area is a(n)

The ______ cycle begins with the weathering of rock.

Species that are the first to colonize an area are termed

Coral and the algae which live inside the coral tissues are an example of

A species that is so important to its community that its removal can dismantle a food web (such as sea otters)is termed a

Raw sewage within a water ecosystem can cause fish kills because respiration by the microbes in the sewage reduces the concentration of oxygen within the water.

Nitrogen-fixing bacteria convert N2 into

Trees that lose only a few leaves at a time are

Energy flows in only one direction through an ecosystem,rather than being recycled.

In the water cycle,animals return water to the environment by

Abiotic components of an ecosystem include

Desert plants often have

A network of interconnected food chains is a food web.

The Boundary Waters Canoe Area (BWCA)is an example of which biome?

Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

Filters

Nitrogen-fixing bacteria convert N₂ into