Biology 113: Chapter 20

Front 1

Which one of the following statements is not true?

a) In the U.S., 25% of prescriptions contain substances derived from plants.
b) Most biodeiversity hot spots are in the U.S.
c) The U.S> uses more energy than Latin America, Africa, India, and China combined.
d) Irrigation is depleting groundwater supplies in parts of California.
e) Mercury is a toxic by-product of plastic production.

Back 1

b) Most biodiversity hot spots are in the United States.

Front 2

The Nile perch is a good example of a(n) _____.

Back 2

nonnative predator

Front 3

Which one of the followin is not likely to result from an increase in global atmospheric temperature of as little as 2 degrees C?

a) altered ecosystem boundaries
b) altered patterns of global rainfall
c) coastal flooding
d) rising sea levels
e) all of the choices are likely to result from an increase in global atmospheric temperature of as little as 2eC.

Back 3

All of the choices are likely to result from an increase in global atmospheric temperature of as little as 2eC.

Front 4

Fire ants _______.

Back 4

can be spread by a single mated queen who is carried to a new destination.

Front 5

On a per capita basis, ____ consumes more energy than the other locations listed here.

a) all of South America
b) all of Africa
c) the U.S.
d) India
e) China

Back 5

the U.S.

Front 6

Which of the following statements is false?

a) Edges frequently have their own biological communities.
b) The interface between a forest and an adjoining field would e considered and edge.
c) Edges are features of human-altered habitats only.
d) The proliferation of edge species can have a positive or negative effect on biodiversity.
e) Edges become more extensive with increased forest fragmentation.

Back 6

Edges are features of human-altered habitats only.

Front 7

Chlorofluorocarbons _______.

Back 7

deplete the ozone layer

Front 8

Habitat fragmentation _____.

Back 8

increases the availability of landscapes

Front 9

Which of the following sources of energy contribute(s) to global warming?

a)nuclear
b)coal
c)geothermal
d)solar
e)all of the above

Back 9

coal

Front 10

A movement corridor _____.

Back 10

unites otherwise isolated patches of quality habitat for a species.

Front 11

Measures of atmospheric carbon dioxide levels taken in Hawaii have shown that these levels have increased about ______ in the last 40 years.

Back 11

14%

Front 12

Approximately ____ living species have been named and described.

Back 12

1.7 million

Front 13

E.O. Wilson coined the term ____ for our innate appreciation of wild environments and living organisms.

Back 13

biophilia

Front 14

An assemblage of interacting ecosystems is a ______.

Back 14

landscape

Front 15

Which of the following is not a likely consequence of the thinning of the ozone layer?

a) increases in skin cancer
b) harm to the phytplankton in the ocean
c) a decrease in the biosphere's primary productivity
d) increases in cataracts
e) all of the choices are likely consequences of the thinning of the ozone layer

Back 15

all of the choices are likely consequences of the thinning of the ozone layer

Front 16

You arrive back in the U.S. after having visited a foreign country located on another continent. The customs agent stops the person in front of you and confiscates the fruit basket this person is bringing home. Being the knowledgeable person you are, you calmly explain to your enraged fellow traveler that the reason for the detainment is that fruit basket may be ______.

Back 16

carrying an exotic species that could damage North American ecosystems

Front 17

Human distubance of a community usually ______.

Back 17

reduces species diversity

Front 18

In the 2,000 years humans have lived on Madagascar, the island has lost approximately _____ of its native species.

Back 18

50%

Front 19

The U.S. is home to at least _______ introduced species.

Back 19

50,000

Front 20

Fragmented populations _____.

Back 20

are composed of endemic species

Front 21

DDT and related compounds are primarily stored in ______.

Back 21

fat

Front 22

Biodiversity hot spots are identified according to _____.

a) the number of species that are endemic
b) the number of species present
c) the degree to which the species are threatened with extinction
d) all of the above
e) none of the above

Back 22

all of the above

Front 23

Why might introduced species flourish in their nonnative habitat?

Back 23

The nonnative habitat may lack predators that recognize the introduced species as prey.

Front 24

Nearly _____ of Earth's land surface has been altered by humans.

Back 24

50%

Front 25

Which of the following statements is correct about landscape ecology?

a) It is the application of ecological principles to the design and construction of sustainable lawns and gardens
b) It deals primarily with ecosystems in urban settings
c) It deals with the study of the ranges of various animals.
d) It is the application of ecological principles to the study of land-use patterns
e) It focuses primarily on human-altered ecological systems.

Back 25

It is the application of ecological principles to the study of land-use patterns

Front 26

Several years ago I was crossing the boreder from Canada to the U.S and I had a bag of Washington State apples with me. The customs officer at the border would not let me take the apples with me into the U.S. Why did the customs officer refuse to allow me to cross the border with my apples?

Back 26

There may have been a species that was not native to the U.S. hitching a ride on my apples.

Front 27

The increase in the concentration of a substance in the tissues of organisms as it is passed up a food chain is called _____.

Back 27

biological magnification

Front 28

In order to better understand the extent of current extinctions, it will be necessary to do which of the following?

a) monito atmospheric carbon dioxide levels
b) identify more of the yet unknown species of organisms on our planet
c) differentiate between plant extinction and animal extinction
d) focus intensely on identifying more species of mammals and birds
e) use the average extinction rates of vertebrates as a baseline

Back 28

identify more of the yet unknown species of organisms on our planet

Front 29

Which of the following would not qualify as a benefit derived from ecosystems?

a) blowfly larvae infesting a deer carcass
b) squirrels burying acorns
c) bees pollinating an apple tree
d) rain falling to Earth
e) All of these relate to ecosystems and are, ultimately, benefits derived from ecosystems.

Back 29

All of these relate to ecosystems and are, ultimately, benefits derived from ecosystems.

Front 30

Approximately ____ of the prescriptions despensed by U.S. pharmacies contain substances derived from plants.

Back 30

25%