Question 1

Trophic efficiency

Accepted Answer

A)  is the percentage of available energy actually transferred from one trophic level to the next. 
B)  is relatively high in aquatic ecosystem averaging about 10% from one trophic level to the next. 
C)  is lower in terrestrial ecosystems when compared with aquatic ecosystems. 
D)  tells us that secondary consumers get far less energy than if they were a primary consumer. 
E)  all of these are correct statements about trophic efficiency. 
A)  is the percentage of available energy actually transferred from one trophic level to the next. 
B)  is relatively high in aquatic ecosystem averaging about 10% from one trophic level to the next. 
C)  is lower in terrestrial ecosystems when compared with aquatic ecosystems. 
D)  tells us that secondary consumers get far less energy than if they were a primary consumer. 
E)  all of these are correct statements about trophic efficiency.

Question 2

Kudzu, tamarisk, and the agents that cause Dutch Elm disease and American Chestnut blight are examples of how introduction of foreign species can disrupt natural ecosystems.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is the term used for bacteria that use nitrates instead of oxygen in their respiration?

Accepted Answer

A)  nitrifying 
B)  denitrifying 
C)  nitrogen-fixing 
D)  hardpan bacteria 
E)  none of these answers are correct 
A)  nitrifying 
B)  denitrifying 
C)  nitrogen-fixing 
D)  hardpan bacteria 
E)  none of these answers are correct

Question 4

The foremost ecosystem decomposers are

Accepted Answer

A)  scavengers. 
B)  primary consumers. 
C)  bacteria and fungi. 
D)  producers. 
E)  insects. 
A)  scavengers. 
B)  primary consumers. 
C)  bacteria and fungi. 
D)  producers. 
E)  insects.

Question 5

Components of the abiotic environment include ____________________________.

Accepted Answer

A)  predators 
B)  pollinating species 
C)  all living species 
D)  seasonal temperatures 
E)  all of these 
A)  predators 
B)  pollinating species 
C)  all living species 
D)  seasonal temperatures 
E)  all of these

Question 6

In an energy pyramid of an ecosystem ___________________________.

Accepted Answer

A)  there is much more energy at the top than at the bottom. 
B)  there is little reduction in energy retained from one level to the next. 
C)  secondary consumers are sustained with less energy than primary consumers. 
D)  there is much more energy at the bottom than at the top. 
E)  the individual components do not function in a regulatory fashion. 
A)  there is much more energy at the top than at the bottom. 
B)  there is little reduction in energy retained from one level to the next. 
C)  secondary consumers are sustained with less energy than primary consumers. 
D)  there is much more energy at the bottom than at the top. 
E)  the individual components do not function in a regulatory fashion.

Question 7

Which series illustrates the correct hierarchy in relationship to each other in the series?

Accepted Answer

A)  biosphere, ecosystem, population, community 
B)  biosphere, ecosystem, community, population 
C)  biosphere, community, population, ecosystem 
D)  biosphere, population, community, ecosystem 
E)  none of these answers are correct 
A)  biosphere, ecosystem, population, community 
B)  biosphere, ecosystem, community, population 
C)  biosphere, community, population, ecosystem 
D)  biosphere, population, community, ecosystem 
E)  none of these answers are correct

Question 8

A _______________ is a group of individuals of the same species, occupying the same region and potentially interacting with each other.

Accepted Answer

A)  community 
B)  ecosystem 
C)  population 
D)  food chain 
E)  family group 
A)  community 
B)  ecosystem 
C)  population 
D)  food chain 
E)  family group

Question 9

The structure produced when nitrogen-fixing bacteria infect legume plants and forms a symbiotic relationship is called a(an)_____.

Accepted Answer

A)  adventitious root. 
B)  crown gall. 
C)  root nodule. 
D)  secondary root. 
E)  legume node. 
A)  adventitious root. 
B)  crown gall. 
C)  root nodule. 
D)  secondary root. 
E)  legume node.

Question 10

Events predicted to occur with increasing global temperatures include _________________.

Accepted Answer

A)  sea level rising, resulting in flooding low-lying coastal areas 
B)  limited impact on human populations 
C)  no disruption of food producing acreage 
D)  decrease in global desert acreage 
E)  all of these 
A)  sea level rising, resulting in flooding low-lying coastal areas 
B)  limited impact on human populations 
C)  no disruption of food producing acreage 
D)  decrease in global desert acreage 
E)  all of these

Question 11

The total mass of consumers is largely determined by the total mass of food made available by the producers.

Accepted Answer

A) True 
 B)False

Question 12

Features of plants and animals that allow them to survive and reproduce in their environment are considered ________________.One example of this is CAM photosynthesis in desert plants.

Accepted Answer

A)  advantages 
B)  allocations 
C)  modifications 
D)  mutations 
E)  adaptations 
A)  advantages 
B)  allocations 
C)  modifications 
D)  mutations 
E)  adaptations

Question 13

Eutrophication refers to the process of decay.

Accepted Answer

A) True 
 B)False

Question 14

Acid deposition lands on plants and lowers the pH of lakes, ponds, and soil.Plants are harmed when acid falls on them but are not affected by changes in pH of the soil or water in which they grow.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following is an example of secondary succession?

Accepted Answer

A)  Reforestation after a fire. 
B)  Successive development of vegetation on a lava flow after it has cooled. 
C)  Successive development of vegetation in a pond created by a beaver dam. 
D)  Successive development of vegetation on a rock pile after an avalanche. 
E)  None of these answers are correct. 
A)  Reforestation after a fire. 
B)  Successive development of vegetation on a lava flow after it has cooled. 
C)  Successive development of vegetation in a pond created by a beaver dam. 
D)  Successive development of vegetation on a rock pile after an avalanche. 
E)  None of these answers are correct.

Question 16

The factors that allow organisms to grow, compete, reproduce, and perpetuate the species in a particular area are part of a field of inquiry called

Accepted Answer

A)  physiology. 
B)  ecology. 
C)  taxonomy. 
D)  biochemistry. 
E)  morphology. 
A)  physiology. 
B)  ecology. 
C)  taxonomy. 
D)  biochemistry. 
E)  morphology.

Question 17

Carbon dioxide is taken up during respiration and the decay process.

Accepted Answer

A) True 
 B)False

Question 18

The foremost decomposers in ecosystems are the roots of plants.

Accepted Answer

A) True 
 B)False

Question 19

When nitrogen from the air is converted to ammonia or other nitrogenous compounds by microorganisms, it is said to be

Accepted Answer

A)  nitrosofied. 
B)  nitrified. 
C)  oxidized. 
D)  ammonified. 
E)  fixed. 
A)  nitrosofied. 
B)  nitrified. 
C)  oxidized. 
D)  ammonified. 
E)  fixed.

Question 20

In exchange for food and housing, the ants in the ant-Acacia symbiotic association

Accepted Answer

A)  act as herbivores on the Acacia. 
B)  neither benefit nor harm the Acacia. 
C)  attack herbivores that attempt to eat Acacia leaves. 
D)  kill plants that attempt to compete with the Acacia for water and nutrients. 
E)  both attack herbivores and kill competing plants. 
A)  act as herbivores on the Acacia. 
B)  neither benefit nor harm the Acacia. 
C)  attack herbivores that attempt to eat Acacia leaves. 
D)  kill plants that attempt to compete with the Acacia for water and nutrients. 
E)  both attack herbivores and kill competing plants.

Exam 25: Ecology

Trophic efficiency

Kudzu, tamarisk, and the agents that cause Dutch Elm disease and American Chestnut blight are examples of how introduction of foreign species can disrupt natural ecosystems.

Which of the following is the term used for bacteria that use nitrates instead of oxygen in their respiration?

The foremost ecosystem decomposers are

Components of the abiotic environment include ____________________________.

In an energy pyramid of an ecosystem ___________________________.

Which series illustrates the correct hierarchy in relationship to each other in the series?

A _______________ is a group of individuals of the same species, occupying the same region and potentially interacting with each other.

The structure produced when nitrogen-fixing bacteria infect legume plants and forms a symbiotic relationship is called a(an)_____.

Events predicted to occur with increasing global temperatures include _________________.

The total mass of consumers is largely determined by the total mass of food made available by the producers.

Features of plants and animals that allow them to survive and reproduce in their environment are considered ________________.One example of this is CAM photosynthesis in desert plants.

Eutrophication refers to the process of decay.

Acid deposition lands on plants and lowers the pH of lakes, ponds, and soil.Plants are harmed when acid falls on them but are not affected by changes in pH of the soil or water in which they grow.

Which of the following is an example of secondary succession?

The factors that allow organisms to grow, compete, reproduce, and perpetuate the species in a particular area are part of a field of inquiry called

Carbon dioxide is taken up during respiration and the decay process.

The foremost decomposers in ecosystems are the roots of plants.

When nitrogen from the air is converted to ammonia or other nitrogenous compounds by microorganisms, it is said to be

In exchange for food and housing, the ants in the ant-Acacia symbiotic association

What Is Plant Biology

The Nature of Life

Cells

Tissues

Roots and Soils

Stems

Leaves

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Growth

Meiosis and Alternation of Generation

Genetics

Plant Breeding and Propagation

Evolution

Plant Names and Classification

Domain Kingdombacteria, Domain King-Domarchaea, and Viruses

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants: Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Biomes

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