Question 1

Along the southeast coast of the United States,an important part of the Gullah culture (African American descendants of slaves brought through South Carolina and Georgia)has been the weaving of sawgrass and other marsh grass baskets (called sweetgrass baskets).How could you use your knowledge of ecological succession in wetland habitats to maintain sawgrass communities as a natural and cultural resource?

Accepted Answer

Sawgrass marshes occur early in wetland ...

Question 2

The difference between a food chain and a food web is that ________________.

Accepted Answer

A)  a food web includes only a single line of species consuming other organisms among trophic levels
B)  a food chain always shows how much energy is passed from one organism to the next
C)  producers are the first species in a food web,while secondary consumers begin a food chain
D)  a food web shows interactions between all the species of a community,instead of just a single line of energy transfer among trophic levels
E)  There is no difference between a food chain and a food web.

Question 3

The concept of the trophic pyramid reflects ________________.

Accepted Answer

A)  the fact that each transfer of energy as you move up the food web results in a loss of about 90%
B)  the fact that each transfer of energy as you move up the food web results in a loss of about 10%
C)  the fact that biomass increases as you move up the food web
D)  the number of decomposers found in a system

Question 4

An example of secondary succession is ________________.

Accepted Answer

A)  an old agricultural field that has been abandoned
B)  the extirpation of mangrove forests
C)  a tropical rainforest being cleared and replanted with non-native grasses for cattle grazing
D)  coastal erosion due to lost wetland
E)  succession on a recent volcanic lava flow

Question 5

Gray squirrels and fox squirrels competing for the same resources are an example of ________________.

Accepted Answer

A)  predation
B)  intraspecific competition
C)  interspecific competition
D)  commensalism
E)  symbiosis

Question 6

How does the introduction of an exotic predator species circumvent the natural predator-prey relationship?

Accepted Answer

Introduced (exotic)species normally have...

Question 7

A tick attaches itself to a human to feed but harms the human in the process.The tick and human have a ________________ relationship.

Accepted Answer

A)  parasitic
B)  mutualistic
C)  commensal
D)  competitive
E)  symbiotic

Question 8

In a study comparing the trophic interactions in two streams,you discover that a Florida stream has 12 different fish species at the secondary consumer level,while an Ohio stream has only six.Compared to the Ohio stream,you hypothesize that the Florida stream shows________________.

Accepted Answer

A)  greater resilience
B)  greater ecological complexity
C)  greater connectivity in the food web
D)  a higher number of trophic levels
E)  all of these answer choices are correct

Question 9

The field that addresses how a given ecosystem is structured and how the species living in it interact is known as ________________.

Accepted Answer

A)  population ecology
B)  community ecology
C)  nutrient cycles
D)  ecosystem services
E)  resilience ecology

Question 10

In mutualism,one organism is ________________,and the other organism is ________________.

Accepted Answer

A)  harmed; harmed
B)  harmed; benefited
C)  benefited; benefited
D)  benefited; harmed
E)  neither benefited nor harmed; neither benefited nor harmed

Question 11

Owls hunt for field mice in a field at night.Foxes hunt for field mice in the same field during the day.The term that best describes the interaction between the owls and the foxes is ________________.

Accepted Answer

A)  mutualism
B)  commensalism
C)  parasitism
D)  resource partitioning
E)  predation

Question 12

The red-cockaded woodpecker is an endangered species with highly specific niche requirements.They prefer longleaf pine forests in the southeast with open understories and few to no deciduous trees.Longleaf pines are a fire-adapted species,and periodic natural wildfires would kill other trees and select for open,longleaf pine forests.How would knowledge of ecological succession help you conserve red-cockaded woodpeckers?

Accepted Answer

The natural pattern of periodic wildfire...

Question 13

______________ ecology is the science that deals with the repair of damage or disturbed ecosystems

Accepted Answer

A)  Restoration
B)  Remediation
C)  Adaptive
D)  Landscape
E)  Corrective

Question 14

Humans drained the Everglades in the early 20th century because ________________.

Accepted Answer

A)  they were seen as having no utility to humans
B)  people wanted to develop cities and towns in the region
C)  people thought it would prevent flooding
D)  All of the answer choices are correct.

Question 15

Organisms that eat dead organic matter are known as ________________.

Accepted Answer

A)  producers
B)  decomposers
C)  detritivores
D)  consumers
E)  both detritivores and consumers

Question 16

The United States has some of the strictest laws on the harvesting of timber.Timber companies,however,have realized that even though they are required to replant after harvesting,they can just plant pine trees.What problems does this cause,and how would you change the regulation?

Accepted Answer

Pine trees are easy for the timber compa...

Question 17

In terms of energy transfer,why can't trophic levels be in the shape of an inverted pyramid,that is,more quaternary consumers and fewer producers?

Accepted Answer

Trophic levels cannot be in the shape of...

Question 18

The Hawaiian Islands are a chain formed by volcanic activity about 1-3 million years ago.Which pattern of ecological succession would have occurred soon after the formation of the Big Island,Hawaii?

Accepted Answer

A)  late stage
B)  secondary
C)  primary

Question 19

Early in primary succession,lichens and mosses colonize bare rock and become the first ecological community.Why are they critical to later stages of succession?

Accepted Answer

A)  They deplete nutrients.
B)  Decomposing lichen and moss biomass create soil.
C)  They outcompete pioneer species,allowing succession to progress.
D)  They limit the ability of climax species to colonize the area.

Question 20

Which of the following describes the interaction between the oxpecker and the zebra?

Accepted Answer

A)  interspecific competition
B)  commensalism
C)  mutualism
D)  predation

Exam 6: Community Ecology the Florida Everglades: a Community in Cris

A tick attaches itself to a human to feed but harms the human in the process.The tick and human have a ________________ relationship.

Correct Answer
verified

Owls hunt for field mice in a field at night.Foxes hunt for field mice in the same field during the day.The term that best describes the interaction between the owls and the foxes is ________________.

Correct Answer
verified

In mutualism,one organism is ,and the other organism is .

Correct Answer
verified

Organisms that eat dead organic matter are known as ________________.

Correct Answer
verified

An example of secondary succession is ________________.

Correct Answer
verified

The field that addresses how a given ecosystem is structured and how the species living in it interact is known as ________________.

Correct Answer
verified

In a study comparing the trophic interactions in two streams,you discover that a Florida stream has 12 different fish species at the secondary consumer level,while an Ohio stream has only six.Compared to the Ohio stream,you hypothesize that the Florida stream shows________________.

Correct Answer
verified

The concept of the trophic pyramid reflects ________________.

Correct Answer
verified

How does the introduction of an exotic predator species circumvent the natural predator-prey relationship?

Correct Answer
verified
Introduced (exotic)species normally have...
View Answer

Early in primary succession,lichens and mosses colonize bare rock and become the first ecological community.Why are they critical to later stages of succession?

Correct Answer
verified

Humans drained the Everglades in the early 20th century because ________________.

Correct Answer
verified

In terms of energy transfer,why can't trophic levels be in the shape of an inverted pyramid,that is,more quaternary consumers and fewer producers?

Correct Answer
verified
Trophic levels cannot be in the shape of...
View Answer

The Hawaiian Islands are a chain formed by volcanic activity about 1-3 million years ago.Which pattern of ecological succession would have occurred soon after the formation of the Big Island,Hawaii?

Correct Answer
verified

Gray squirrels and fox squirrels competing for the same resources are an example of ________________.

Correct Answer
verified

Correct Answer
verified
Sawgrass marshes occur early in wetland ...
View Answer

______________ ecology is the science that deals with the repair of damage or disturbed ecosystems

Correct Answer
verified

Which of the following describes the interaction between the oxpecker and the zebra?

Correct Answer
verified

Correct Answer
verified
The natural pattern of periodic wildfire...
View Answer

The United States has some of the strictest laws on the harvesting of timber.Timber companies,however,have realized that even though they are required to replant after harvesting,they can just plant pine trees.What problems does this cause,and how would you change the regulation?

Correct Answer
verified
Pine trees are easy for the timber compa...
View Answer

The difference between a food chain and a food web is that ________________.

Correct Answer
verified

Exam 6: Community Ecology the Florida Everglades: a Community in Cris

A tick attaches itself to a human to feed but harms the human in the process.The tick and human have a ________________ relationship.

Correct AnswerverifiedShow Answer

Owls hunt for field mice in a field at night.Foxes hunt for field mice in the same field during the day.The term that best describes the interaction between the owls and the foxes is ________________.

Correct AnswerverifiedShow Answer

In mutualism,one organism is ________________,and the other organism is ________________.

Correct AnswerverifiedShow Answer

Organisms that eat dead organic matter are known as ________________.

Correct AnswerverifiedShow Answer

An example of secondary succession is ________________.

Correct AnswerverifiedShow Answer

The field that addresses how a given ecosystem is structured and how the species living in it interact is known as ________________.

Correct AnswerverifiedShow Answer

In a study comparing the trophic interactions in two streams,you discover that a Florida stream has 12 different fish species at the secondary consumer level,while an Ohio stream has only six.Compared to the Ohio stream,you hypothesize that the Florida stream shows________________.

Correct AnswerverifiedShow Answer

The concept of the trophic pyramid reflects ________________.

Correct AnswerverifiedShow Answer

How does the introduction of an exotic predator species circumvent the natural predator-prey relationship?

Correct AnswerverifiedIntroduced (exotic)species normally have...View AnswerShow Answer

Early in primary succession,lichens and mosses colonize bare rock and become the first ecological community.Why are they critical to later stages of succession?

Correct AnswerverifiedShow Answer

Humans drained the Everglades in the early 20th century because ________________.

Correct AnswerverifiedShow Answer

In terms of energy transfer,why can't trophic levels be in the shape of an inverted pyramid,that is,more quaternary consumers and fewer producers?

Correct AnswerverifiedTrophic levels cannot be in the shape of...View AnswerShow Answer

The Hawaiian Islands are a chain formed by volcanic activity about 1-3 million years ago.Which pattern of ecological succession would have occurred soon after the formation of the Big Island,Hawaii?

Correct AnswerverifiedShow Answer

Gray squirrels and fox squirrels competing for the same resources are an example of ________________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedSawgrass marshes occur early in wetland ...View AnswerShow Answer

______________ ecology is the science that deals with the repair of damage or disturbed ecosystems

Correct AnswerverifiedShow Answer

Which of the following describes the interaction between the oxpecker and the zebra?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThe natural pattern of periodic wildfire...View AnswerShow Answer

The United States has some of the strictest laws on the harvesting of timber.Timber companies,however,have realized that even though they are required to replant after harvesting,they can just plant pine trees.What problems does this cause,and how would you change the regulation?

Correct AnswerverifiedPine trees are easy for the timber compa...View AnswerShow Answer

The difference between a food chain and a food web is that ________________.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

In mutualism,one organism is ,and the other organism is .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Introduced (exotic)species normally have...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Trophic levels cannot be in the shape of...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Sawgrass marshes occur early in wetland ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The natural pattern of periodic wildfire...
View Answer

Correct Answer
verified
Pine trees are easy for the timber compa...
View Answer

Correct Answer
verified