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EV 9-1

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

CORE CASE STUDY PG 176 - It has been estimated by a review of more than 200 scientific articles that during this century up to ____ of the world's bird species could be driven to extinction by climate change.
a.
725
b.
1400
c.
39%
d.
72%
e.
875
 

 2. 

CORE CASE STUDY PG 176 - Why are bird species such good environmental indicators?
a.
They live in every climate and biome.
b.
They respond quickly to environmental changes in their habitats.
c.
They are easy to track and count.
d.
All of these.
e.
None of these--Birds are not good indicators of the environment.
 

 3. 

CORE CASE STUDY PG 176 - The greatest decline in birds has occurred in which group?
a.
desert birds
b.
long distance migratory birds
c.
non-migratory birds
d.
robins
e.
blackbirds
 

 4. 

The current rate of extinction is at least ____ times the rate that existed before humans arrived on Earth.
a.
5.
b.
10.
c.
100.
d.
The rate is the same as it was before humans arrived on earth.
e.
None of these.
 

 5. 

A biologist is most likely to say that the passenger pigeon is
a.
endangered
b.
locally extinct
c.
ecologically extinct
d.
biologically extinct
e.
threatened
 

 6. 

You are an ecologist studying alligators in the outback. You find that the population of alligators is so depleted that organisms that depend on alligator holes for their survival are also hurting. You would most likely label the alligators
a.
threatened
b.
endangered
c.
locally extinct
d.
ecologically extinct
e.
biologically extinct
 

 7. 

An endangered species is any species that can
a.
undergo alteration of its genetic traits
b.
become rare within the next century
c.
soon become extinct in all or part of its range
d.
eventually become threatened or rare
e.
be considered economically important, but is rare
 

 8. 

The species area relationship concept suggests that if 90% of a coral reef is lost
a.
90% of the species utilizing the reef will go extinct
b.
100% of the species will go extinct.
c.
50% of the species will go extinct.
d.
35% will go extinct.
e.
There will be no loss of species.
 

 9. 

Examples of animals that are endangered because they have fixed migratory patterns are the
a.
desert pupfish and giant panda
b.
blue whale and whooping crane
c.
robin and blackbird
d.
Bengal tiger and Florida panther
e.
rhinoceros and snow leopard
 

 10. 

All of the following characteristics would make a species more prone to extinction except
a.
the need for large territories
b.
low reproductive rate
c.
fixed migratory patterns
d.
small body size
e.
specialized niche
 

 11. 

____ have estimated that up to 25% of the world's current animal and plant species could be gone by 2050 and 50% could by gone by the end of the century.
a.
Edward O. Wilson and Stuart Pimm
b.
Philip Levin and Donald Levin
c.
Norman Myers and Aldo Leopold
d.
U.S. Fish and Wildlife Service biologists
e.
None of these
 

 12. 

The type of species that are expected to increase in a world with degraded and simplified habitats are
a.
rodent species
b.
insect species such as cockroaches
c.
weeds
d.
all of these
e.
none of these
 

 13. 

The blue whale is prone to extinction for all of the following reasons except
a.
low reproduction rate
b.
specialized niche
c.
fixed migratory patterns
d.
all of these
e.
none of these
 



 
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