Question 1

Which of the following is a correct interpretation of this graph?

Accepted Answer

A) Habitat loss and overexploitation are the major reasons for species extinctions. 
B) Habitat loss and introduced species are the major reasons for species extinctions. 
C) Habitat loss and altered sex ratios are the major reasons for species extinctions. 
D) Overexploitation and introduction of exotic species have had a greater combined effect on species than habitat loss. 
A) Habitat loss and overexploitation are the major reasons for species extinctions. 
B) Habitat loss and introduced species are the major reasons for species extinctions. 
C) Habitat loss and altered sex ratios are the major reasons for species extinctions. 
D) Overexploitation and introduction of exotic species have had a greater combined effect on species than habitat loss.

Question 2

Scientists estimate that about _____ of the world eukaryotic organisms have been discovered and given scientific names.

Accepted Answer

A) 1% 
B) 5% 
C) 15% 
D) 40% 
E) 90% 
A) 1% 
B) 5% 
C) 15% 
D) 40% 
E) 90%

Question 3

A major problem with hotspots is humans moving in and causing

Accepted Answer

A) habitat destruction. 
B) increased genetic diversity. 
C) increased immigration among species. 
D) decreased introductions. 
E) decreased biomagnification. 
A) habitat destruction. 
B) increased genetic diversity. 
C) increased immigration among species. 
D) decreased introductions. 
E) decreased biomagnification.

Question 4

Human caused introductions can occur by all of the following except

Accepted Answer

A) plants and animals accidentally escaping from ships. 
B) automobile or truck tires. 
C) being in the soil or on a plant sold at a nursery. 
D) seeds or organisms on clothing or shoes. 
E) captive breeding. 
A) plants and animals accidentally escaping from ships. 
B) automobile or truck tires. 
C) being in the soil or on a plant sold at a nursery. 
D) seeds or organisms on clothing or shoes. 
E) captive breeding.

Question 5

Which one of the following pairings of conservation concern and an organism illustrating the consequences of that concern is incorrect?

Accepted Answer

A) Lake Victoria cichlids-keystone species 
B) Heath hen-demographic problems 
C) Prairie chickens-lack of genetic heterogeneity 
D) Peregrine falcon-pollution 
E) Dusky seaside sparrow-Allee effect 
A) Lake Victoria cichlids-keystone species 
B) Heath hen-demographic problems 
C) Prairie chickens-lack of genetic heterogeneity 
D) Peregrine falcon-pollution 
E) Dusky seaside sparrow-Allee effect

Question 6

Choose the letter of the best match from the following:
-A species goes extinct without any clear,single cause.

Accepted Answer

A) hotspot 
B) habitat loss 
C) edge effects 
D) megafaunal extinction 
E) extinction vortex 
A) hotspot 
B) habitat loss 
C) edge effects 
D) megafaunal extinction 
E) extinction vortex

Question 7

Animals that weigh more than 100 pounds are considered as

Accepted Answer

A) extinct. 
B) endangered species. 
C) safe from extinction. 
D) sensitive species. 
E) megafauna. 
A) extinct. 
B) endangered species. 
C) safe from extinction. 
D) sensitive species. 
E) megafauna.

Question 8

Which one of the following biology topics would be least useful to a conservation biologist?

Accepted Answer

A) Cladistics 
B) Bottleneck effect 
C) Endemism 
D) Island biogeography 
E) Evolutionary theory 
A) Cladistics 
B) Bottleneck effect 
C) Endemism 
D) Island biogeography 
E) Evolutionary theory

Question 9

Sea otters have been used as an example of the "Keystone Species" concept.This means that sea otters

Accepted Answer

A) provide the carnivorous component of the food chain in which they live. 
B) promote the edge effect in the kelp forests off the northern coastline of California. 
C) exert a particular strong influence on the structure and functioning of an ecosystem. 
D) offer an opportunity for scientists to study the long-term effects as the sea otter populations are harvesteD. 
E) interactions with the kelp forests and the sea urchins have not really had any consequences that need to be currently studied. 
A) provide the carnivorous component of the food chain in which they live. 
B) promote the edge effect in the kelp forests off the northern coastline of California. 
C) exert a particular strong influence on the structure and functioning of an ecosystem. 
D) offer an opportunity for scientists to study the long-term effects as the sea otter populations are harvesteD. 
E) interactions with the kelp forests and the sea urchins have not really had any consequences that need to be currently studied.

Question 10

Natural colonization can happen in all of the following ways except

Accepted Answer

A) a flock of birds gets blown off course. 
B) a bird eats a fruit on the mainland and defecates the seed on an island. 
C) people plant new species on an island. 
D) lowered sea levels connect two areas previously isolateD. 
E) birds pick up seeds on their feed wading in mud,drop them elsewherE. 
A) a flock of birds gets blown off course. 
B) a bird eats a fruit on the mainland and defecates the seed on an island. 
C) people plant new species on an island. 
D) lowered sea levels connect two areas previously isolateD. 
E) birds pick up seeds on their feed wading in mud,drop them elsewherE.

Question 11

Choose the letter of the best match from the following:
-Almost all the large mammals disappeared from North America by about 10,000 years ago.

Accepted Answer

A) hotspot 
B) habitat loss 
C) edge effects 
D) megafaunal extinction 
E) extinction vortex 
A) hotspot 
B) habitat loss 
C) edge effects 
D) megafaunal extinction 
E) extinction vortex

Question 12

In the last 20 years one concern of scientists who study amphibians is that

Accepted Answer

A) genetic diversity is being increased too rapidly for proper maintenance. 
B) the edge effects are causing declines in species numbers. 
C) DDT is affecting reproduction by thinning the egg membranes. 
D) populations are diversifying rapidly and speciation is occurring. 
E) many species are declining or have gone extinct in recent years. 
A) genetic diversity is being increased too rapidly for proper maintenance. 
B) the edge effects are causing declines in species numbers. 
C) DDT is affecting reproduction by thinning the egg membranes. 
D) populations are diversifying rapidly and speciation is occurring. 
E) many species are declining or have gone extinct in recent years.

Question 13

The various endemic cichlid species of Lake Victoria have suffered losses in their population numbers and species due to the introduction of

Accepted Answer

A) the Nile crocodile. 
B) the Nile perch. 
C) a new algae species. 
D) a new ectoparasite that lives on the gills. 
E) a fish hawk. 
A) the Nile crocodile. 
B) the Nile perch. 
C) a new algae species. 
D) a new ectoparasite that lives on the gills. 
E) a fish hawk.

Question 14

Which one of the following is not a correct pairing of an important issue from conservation biology and an example or concept that relates to that issue?

Accepted Answer

A) ecosystem service-NYC water supply 
B) habitat destruction-clear-cutting in the Pacific NW 
C) species-area relationship-habitat fragmentation 
D) pristine restoration-rain forests of Madagascar 
E) restoration of ecosystems-Yellowstone wolves 
A) ecosystem service-NYC water supply 
B) habitat destruction-clear-cutting in the Pacific NW 
C) species-area relationship-habitat fragmentation 
D) pristine restoration-rain forests of Madagascar 
E) restoration of ecosystems-Yellowstone wolves

Question 15

The majority of mammal and bird extinctions have occurred on ______.

Accepted Answer

A) habitat fragments 
B) mountain tops 
C) islands 
D) desert ecosystems 
A) habitat fragments 
B) mountain tops 
C) islands 
D) desert ecosystems

Question 16

In deciding where in the world to focus conservation efforts,select the least important factor.

Accepted Answer

A) regions with unique habitats 
B) regions with low human population growth 
C) regions with many endemics 
D) species rich regions 
E) hotspot regions 
A) regions with unique habitats 
B) regions with low human population growth 
C) regions with many endemics 
D) species rich regions 
E) hotspot regions

Question 17

Why might the different species of whales fail to recover even though hunting has been banned?

Accepted Answer

A) loss of genetic diversity 
B) loss of habitat 
C) introduction of invasive species 
D) increasing predation 
E) increased disease spread due to edge effects 
A) loss of genetic diversity 
B) loss of habitat 
C) introduction of invasive species 
D) increasing predation 
E) increased disease spread due to edge effects

Question 18

Which one of the following statements about preservation of flying foxes in the Old World tropics is false?

Accepted Answer

A) Because flying foxes are largely endemic,their decline has had a large,community-wide impact. 
B) Flying foxes serve as both plant pollinators and seed dispersers. 
C) Many plants have co-evolved with species of flying fox in their communities. 
D) Decline in flying fox populations have affected the reproductive success of many plants. 
E) The social system of many flying fox species has made them susceptible to the effects of hunting. 
A) Because flying foxes are largely endemic,their decline has had a large,community-wide impact. 
B) Flying foxes serve as both plant pollinators and seed dispersers. 
C) Many plants have co-evolved with species of flying fox in their communities. 
D) Decline in flying fox populations have affected the reproductive success of many plants. 
E) The social system of many flying fox species has made them susceptible to the effects of hunting.

Question 19

A small island has stable populations of plants and animals,including one species of hawk as the only predator.A ship docks at the island,and the ship's cat has recently had a litter of kittens.One of the young cats accidentally goes ashore in a small boat,jumps to land and runs into the brush.No one notices,and they leave the cat on the island.

Accepted Answer

A) It's only one cat and will make no difference to the island. 
B) The increase in nitrogenous waste from the cat will increase the size of many plants. 
C) The fish in the lagoon will decrease due to predation. 
D) Some species of ground-nesting birds may go extinct within a few years. 
E) The insect populations will declinE. 
A) It's only one cat and will make no difference to the island. 
B) The increase in nitrogenous waste from the cat will increase the size of many plants. 
C) The fish in the lagoon will decrease due to predation. 
D) Some species of ground-nesting birds may go extinct within a few years. 
E) The insect populations will declinE.

Question 20

Which of the following choices states a correct interpretation of this graph showing the relationship between extinction rate and island size?

Accepted Answer

A) Larger islands have greater extinction rates than do smaller islands. 
B) Smaller islands have greater extinction rates than do larger islands. 
C) Larger islands and smaller islands have similar if not the same extinction rates because island size is not related to extinction rates. 
D) Smaller islands have fewer species and thus lower extinction rates than larger islands. 
E) Larger islands have more species and are at greater risks for extinctions than smaller islands. 
A) Larger islands have greater extinction rates than do smaller islands. 
B) Smaller islands have greater extinction rates than do larger islands. 
C) Larger islands and smaller islands have similar if not the same extinction rates because island size is not related to extinction rates. 
D) Smaller islands have fewer species and thus lower extinction rates than larger islands. 
E) Larger islands have more species and are at greater risks for extinctions than smaller islands.

Exam 60: Conservation Biology

Which of the following is a correct interpretation of this graph?

Scientists estimate that about _____ of the world eukaryotic organisms have been discovered and given scientific names.

A major problem with hotspots is humans moving in and causing

Human caused introductions can occur by all of the following except

Which one of the following pairings of conservation concern and an organism illustrating the consequences of that concern is incorrect?

Choose the letter of the best match from the following: -A species goes extinct without any clear,single cause.

Animals that weigh more than 100 pounds are considered as

Which one of the following biology topics would be least useful to a conservation biologist?

Sea otters have been used as an example of the "Keystone Species" concept.This means that sea otters

Natural colonization can happen in all of the following ways except

Choose the letter of the best match from the following: -Almost all the large mammals disappeared from North America by about 10,000 years ago.

In the last 20 years one concern of scientists who study amphibians is that

The various endemic cichlid species of Lake Victoria have suffered losses in their population numbers and species due to the introduction of

Which one of the following is not a correct pairing of an important issue from conservation biology and an example or concept that relates to that issue?

The majority of mammal and bird extinctions have occurred on ______.

In deciding where in the world to focus conservation efforts,select the least important factor.

Why might the different species of whales fail to recover even though hunting has been banned?

Which one of the following statements about preservation of flying foxes in the Old World tropics is false?

Which of the following choices states a correct interpretation of this graph showing the relationship between extinction rate and island size?

The Science of Biology

The Nature of Molecules

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes Mapping and the Meiosis - Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

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The Evidence for Evolution

The Origin of Species

Systematics and the Phylogenetic Revolution

Genome Evolution

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Overview of Green Plants

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The Animal Body and Principles of Regulation

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