Biology
Ch. 6 Review
In the very distant past, most
people
A. lived in small
groups.
B. lived in permanent
settlements.
C. did not gather
plants.
D. did not hunt
animals.
0%
A.
0%
B.
0%
C.
0%
D.
Imported plants in Hawaii have
A. crowded out many
native species.
B. reduced the native
bird species.
C. introduced diseases.
D. depleted natural
resources.
0%
A.
0%
B.
0%
C.
0%
D.
The Americans, Europeans, and Asians
who settled in the islands of Hawaii
changed the islands by
A. clearing vast areas for
the growth of sugar
cane.
B. using large amounts of
water.
C. introducing nonnative
crop plants.
D. all of the above
0%
A.
0%
B.
0%
C.
0%
D.
Early hunters and gatherers in North
America may have been responsible for
A. natural plant and
animal populations.
B. a major extinction
event of large animals.
C. producing new
varieties of crops.
D. inventing technology
such as manufactured
tools.
0%
A.
0%
B.
0%
C.
0%
D.
Which has become the most important
source of environmental change on
Earth?
A.
B.
C.
D.
climate
energy
human activity
conservation
biology
0%
A.
0%
B.
0%
C.
0%
D.
An environmental problem that
resulted from the green revolution was
A.
B.
C.
D.
overpopulation.
failed crops.
starvation.
depleted water
supplies.
0%
A.
0%
B.
0%
C.
0%
D.
Land is a resource that provides
A. space for cities
and suburbs.
B. raw materials
for industry.
C. soil for
growing crops.
D. all of the above
0%
A.
0%
B.
0%
C.
0%
D.
An old-growth forest is
A. a renewable
resource.
B. a nonrenewable
resource.
C. a microclimate.
D. poor in
biodiversity.
0%
A.
0%
0%
B.
C.
0%
D.
A resource, such as air or parts of the
oceans, that is open to anyone is often
preserved and protected by
A. international
organizations.
B. everyone.
C. the country in
which it is
located.
D. no one.
0%
A.
0%
B.
0%
C.
0%
D.
Why are fossil fuels nonrenewable?
A. They require hundreds
of millions of years to
form.
B. Their ecosystems
change forever when
they are burned.
C. They are converted to
carbon dioxide when
they are burned.
D. They exist in a very
small supply.
0%
A.
0%
B.
0%
C.
0%
D.
Using renewable resources while
ensuring that they are not depleted is a
practice called
A. sustainable
development.
B. monoculture.
C. biological
magnification.
D. subsistence
hunting.
0%
A.
0%
B.
0%
C.
0%
D.
An example of a sustainable-development
practice is the use of beneficial insects like
ladybugs to
A. harm natural
resources.
B. pollinate plants.
C. control unwanted
pests.
D. eat unwanted
plants.
0%
A.
0%
B.
0%
C.
0%
D.
Which is a way to limit
deforestation?
A. Use more wood
products
B. Plant and harvest
trees on a tree farm
C. Increase carbon
dioxide levels
D. Fertilize the soi;
0%
A.
0%
B.
0%
C.
0%
D.
What concept should be practiced to
live interdependently with nature’s
systems?
A. aquaculture
B. recycling
C. subsistence
hunting
D. sustainable
development
0%
A.
0%
B.
0%
C.
0%
D.
The sulfur and nitrogen
compounds in smog combine
with water to form
A.
B.
C.
D.
ozone.
ammonia.
acid rain.
CFC’s
0%
A.
0%
B.
0%
C.
0%
D.
Of the following events, the last to occur
when toxic chemicals are discarded into
a stream is that the chemicals
A. pose a threat to
human health.
B. enter the food
chain.
C. are carried into a
lake.
D. harm aquatic plants
and animals.
0%
A.
0%
B.
0%
C.
0%
D.
When erosion and other factors
cause soil to lose its ability to hold
water and other nutrients and to
support plant life, it is called
A.
B.
C.
D.
desertification.
depletion.
deforestation.
monoculture.
0%
A.
0%
B.
0%
C.
0%
D.
Which of the following is NOT considered
a sustainable-development strategy for
management of Earth’s resources?
A. contour
plowing
B. desertification
C. aquaculture
D. drip irrigation
0%
A.
0%
B.
0%
C.
0%
D.
The wearing away of surface soil
by water and wind is known as
A.
B.
C.
D.
deforestation.
desertification.
overgrazing.
soil erosion.
0%
A.
0%
B.
0%
C.
0%
D.
The number of different species
in the biosphere is called
A. biodiversity.
B. ecosystem
diversity.
C. genetic
diversity.
D. species
diversity.
0%
A.
0%
B.
0%
C.
0%
D.
Biodiversity is important to human
society because it
A. is a natural
resource.
B. provides food
and goods.
C. provides
medicines.
0%
0%
0%
0%
D. all of the above
A.
B.
C.
D.
The sum total of the genetically based
variety of living organisms in the biosphere
is called
A. species diversity.
B. sustainable
development.
C. biodiversity.
D. conservation
0%
0%
0%
0%
biology.
A.
B.
C.
D.
Biodiversity is valuable in the biosphere
because it
A. gives us interesting
things to look at.
B. tells us about many
other species.
C. is the biological
life-support system
of our planet.
D. provides humans
with resistance to
disease.
0%
A.
0%
B.
0%
C.
0%
D.
What is meant by “a library of genetic
information” in reference to biodiversity?
A. The biodiversity of plants and
animals is interesting to read about.
B. All living organisms contain
genetic information upon which
humans can draw for future use.
C. Species provide humans with many
useful products to enhance our
lives.
D. We have much to admire in the
many forms of life that surround us.
0%
A.
0%
0%
0%
B.
C.
D.
Human well-being is tied to biodiversity
because
A. humans love to look at beautiful
things.
B. humans are part of the food webs
and energy cycles that a great
variety of organisms share.
C. less biodiversity makes humans
vulnerable to extinction.
D. humans need a wide variety of
animal species for hunting and
wildlife products.
0%
0%
0%
0%
A.
B.
C.
D.
An endangered species is
A. a diseased animal.
B. a dangerous
predator.
C. a group of
organisms in danger
of extinction.
D. all organisms at the
top of a food chain.
0%
A.
0%
B.
0%
C.
0%
D.
DDT was used to
A.
B.
C.
D.
fertilize soil.
kill insects.
form ozone.
feed animals.
0%
A.
0%
B.
0%
C.
0%
D.
One property that makes DDT
hazardous over the long run is that
DDT is
A.
B.
C.
D.
an insecticide.
a perfect pesticide.
nonbiodegradable.
deadly to herbivores.
0%
A.
0%
B.
0%
C.
0%
D.
A.
B.
C.
D.
All of the following are threats to
biodiversity EXCEPT
biological
magnification of
toxic compounds.
habitat
fragmentation.
invasive species.
0%
0%
0%
species
preservation.
A.
B.
C.
0%
D.
One of the greatest threats today to
biological diversity is
A. old-growth
forests.
B. ozone
depletion.
C. habitat
destruction.
0%
0%
0%
0%
D. monoculture.
A.
B.
C.
D.
As DDT moves up the trophic
levels in food chains, or food
webs, its concentration
A.
B.
C.
D.
stays the same.
increases.
decreases.
is eliminated.
0%
A.
0%
B.
0%
C.
0%
D.
A major factor that negatively
affects biodiversity is
A. biological
magnification.
B. habitat
fragmentation.
C. the green
revolution.
D. nonrenewable
energy.
0%
A.
0%
B.
0%
C.
0%
D.
One of the goals of conservation
biology is to
A. enforce
environmental
laws.
B. protect habitats.
C. manage natural
resources.
D. all of the above
0%
A.
0%
B.
0%
C.
0%
D.
An ecological “hot spot” is an area where
A. habitats and species
are healthy.
B. hunting is
encouraged.
C. habitats and species
are in the most
danger of extinction.
D. species diversity is
too high.
0%
A.
0%
B.
0%
C.
0%
D.
The goals of conservation biology include all
of the following EXCEPT
A. wise management
of natural resources.
B. introducing foreign
species into new
environments.
C. preservation of
habitats and
wildlife.
D. protection of
biodiversity.
0%
A.
0%
B.
0%
C.
0%
D.
Protecting ecosystem diversity is a
goal of
A. the green
revolution.
B. conservation
biology.
C. the captive breeding
program.
D. the United Nations.
0%
A.
0%
B.
0%
C.
0%
D.
The “hot spot” strategy seeks to protect
species in danger of extinction due to
A. captive breeding
programs.
B. expanding
national parks.
C. human activity.
D. all of the above
0%
A.
0%
B.
0%
C.
0%
D.
Protecting an entire ecosystem will ensure that
A. captive breeding
programs will succeed.
B. existing parks and
reserves will expand.
C. governments will set
aside land.
D. natural habitats and the
interactions of many
different species will
be preserved.
0%
A.
0%
B.
0%
C.
0%
D.
Overexposure to UV radiation can
A. cause cancer.
B. decrease
organisms’
resistance to
disease.
C. damage eyes.
D. all of the above
0%
A.
0%
B.
0%
C.
0%
D.
An increase in Earth’s average temperature
from the buildup of carbon dioxide and other
gases in the atmosphere is called
A. the greenhouse
effect.
B. ozone depletion.
C. global warming.
D. particulate
dispersal.
0%
A.
0%
B.
0%
C.
0%
D.
Some scientists think that global warming
may be
A. a natural
variation in
climate.
B. a result of human
activities.
C. melting the polar
ice caps.
D. all of the above
0%
A.
0%
B.
0%
C.
0%
D.
The major cause of ozone
depletion is
A.
B.
C.
D.
nitric acid.
sulfuric acid.
CFC’s
ultraviolet
light.
0%
A.
0%
B.
0%
C.
0%
D.
What would be the most likely effect of
an increase in the use of CFCs?
A. The ozone layer would
suddenly disappear.
B. The ozone holes would
get smaller.
C. The ozone holes would
get larger.
D. There would be no
effect on ozone in the
atmosphere.
0%
A.
0%
B.
0%
C.
0%
D.
Carbon dioxide is released into the
atmosphere by all of the following
EXCEPT the
A. burning of fossil
fuels.
B. depletion of the
ozone layer.
C. burning of trees and
forests.
D. burning of gasoline
0%
A.
0%
B.
0%
C.
0%
D.
The intensive farming practices
of the green revolution led to the
use of beneficial insecticides.
A. True
B. False
0%
A.
0%
B.
By the end of the last ice age,
humans began the practice of
agriculture.
A. True
B. False
0%
A.
0%
B.
Old-growth forests are a
renewable resource.
A. True
B. False
0%
A.
0%
B.
According to the principles of
conservation biology, a
sustainable system is efficient
when it consumes as little energy
and material as possible.
A. True
B. False
0%
A.
0%
B.
Acidic gases are released into the
air by combustion processes such
as the burning of fossil fuels.
A. True
B. False
0%
A.
0%
B.
Wetlands such as swamps can
help purify water passing through
them.
A. True
B. False
0%
A.
0%
B.
A sustainable-development
practice that can pollute water
with fish wastes if not properly
managed is catch limits.
A. True
B. False
0%
A.
0%
B.
Most crop plants have wild
relatives with useful traits such as
resistance to disease.
A. True
B. False
0%
A.
0%
B.
One of the values of biological
magnification is its potential as a
source for material that is
beneficial to humankind.
A. True
B. False
0%
A.
0%
B.
Biodiversity is important to
humankind because we are part
of it and dependent on it for our
own survival.
A. True
B. False
0%
A.
0%
B.
Substances that cannot be broken
down into their elements by
metabolic processes are
biodegradable.
A. True
B. False
0%
A.
0%
B.
An introduced species can drive
an invasive species to extinction.
A. True
B. False
0%
A.
0%
B.
Conservation goals must be
weighed against economic costs.
A. True
B. False
0%
A.
0%
B.
The main cause of the thinning of
the ozone layer is global
warming.
A. True
B. False
0%
A.
0%
B.
A result of global warming might
be a rise in sea level.
A. True
B. False
0%
A.
0%
B.