Biology
Ch. 5 Review
Which of the following is NOT
one of the factors that play a
role in population growth rate?
1.
2.
3.
4.
immigration
death rate
emigration
demography
0%
1
0%
0%
2
3
0%
4
One of the main characteristics
of a population is its
1. change over time.
2. geographic
distribution.
3. dynamics.
4. habitat.
0%
1
0%
0%
2
3
0%
4
Sea otters are important to the
populations of
1.
2.
3.
4.
kelp.
sea urchins.
killer whales.
all of the above
0%
1
0%
0%
2
3
0%
4
There are 150 Saguaro cactus plants per
square kilometer in a certain area of Arizona
desert. To which population characteristic
does this information refer?
1. growth rate
2. geographic
distribution
3. age structure
4. population density
0%
1
0%
0%
2
3
0%
4
What does the range of a population
tell you that density does not?
1. the number that live in
an area
2. the areas inhabited by a
population
3. the births per unit area
4. the deaths per unit area
0%
1
0%
0%
2
3
0%
4
A small farming community in Texas covers 14
square kilometers. There are 420 individuals who
live within the town limits. What is the population
density of this community?
1. 0.03 individuals per square
kilometer
2. 53 individuals per square
kilometer
3. 30 individuals per square
kilometer
4. 10.24 individuals per square
kilometer
0%
1
0%
0%
2
3
0%
4
Which of the following tells you population
density?
1. the number of births per
year
2. the number of frogs in a
pond
3. the number of deaths per
year
4. the number of bacteria
per square millimeter
0%
1
0%
0%
2
3
0%
4
The movement of organisms into a
given area from another area is
called
1.
2.
3.
4.
immigration.
emigration.
population shift.
carrying capacity.
0%
1
0%
0%
2
3
0%
4
When organisms move out of
the population, this is known as
1.
2.
3.
4.
emigration.
abandonment.
immigration.
succession.
0%
1
0%
0%
2
3
0%
4
What must occur in a population for it to
grow?
1. The birthrate becomes
higher than the death rate.
2. The birthrate stays the same
and the death rate increases.
3. The birthrate becomes lower
than the death rate.
4. The birthrate and the death 0%
rate remain the same.
1
0%
0%
2
3
0%
4
What is happening in a population as it
decreases?
1. The birthrate and the death
rate remain the same.
2. The death rate becomes
lower than the birthrate.
3. The death rate stays the
same and the birthrate
0%
increases.
4. The death rate becomes
higher than the birthrate.
1
0%
0%
2
3
0%
4
If immigration and emigration numbers
remain equal, which is the most important
contributing factor to a slowed growth rate?
1.
2.
3.
4.
increased birthrate
constant death rate
decreased birthrate
constant birthrate
0%
1
0%
0%
2
3
0%
4
Which are two ways a population can
decrease in size?
1. immigration and emigration
2. increased death rate and
immigration
3. decreased birthrate and
emigration
4. emigration and increased
birthrate
0%
1
0%
0%
2
3
0%
4
When individuals in a population
reproduce at a constant rate, it is called
1. logistic growth.
2. growth density.
3. exponential
growth.
4. multiple growth.
0%
1
0%
0%
2
3
0%
4
The various growth phases through
which most populations go are
represented on a(an)
1. logistic growth curve.
2. exponential growth
curve.
3. normal curve.
4. population curve.
0%
1
0%
0%
2
3
0%
4
As resources in a population become
less available, the population
1. declines rapidly.
2. increases slowly.
3. reaches carrying
capacity.
4. enters a phase of
exponential growth.
0%
1
0%
0%
2
3
0%
4
Which factor might NOT contribute
to an exponential growth rate in a
given population?
1.
2.
3.
4.
lower death rates
higher birthrates
less competition
reduced resources
0%
1
0%
0%
2
3
0%
4
In a logistic growth curve,
exponential growth is the phase in
which the population
1. reaches carrying
capacity.
2. grows quickly.
3. growth begins to
slow down.
4. growth stops.
0%
1
0%
0%
2
3
0%
4
When the exponential phase of a logistic growth
curve of a population ceases,
1. the size of the population
drops.
2. the size of the population
stays the same.
3. population growth begins
to slow down.
4. population growth begins
to speed up.
0%
1
0%
0%
2
3
0%
4
A biotic or an abiotic resource in the
environment that causes population
size to decrease is a
1.
2.
3.
4.
carrying capacity.
limiting nutrient.
limiting factor.
growth factor.
0%
1
0%
0%
2
3
0%
4
All of the following are limiting
factors EXCEPT
1.
2.
3.
4.
immigration.
competition.
predation.
human
disturbances.
0%
1
0%
0%
2
3
0%
4
Which of the following is NOT
likely to be a limiting factor on
the sea otter population?
1.
2.
3.
4.
disease
competition
drought
predation
0%
1
0%
0%
2
3
0%
4
Which will reduce competition
within a species’ population?
1.
2.
3.
4.
fewer individuals
higher birthrate
fewer resources
higher population
density
0%
1
0%
0%
2
3
0%
4
If a population grows larger than
the carrying capacity of the
environment, the
1.
2.
3.
4.
death rate may rise.
birthrate may rise.
death rate must fall.
birthrate must fall.
0%
1
0%
0%
2
3
0%
4
Water lilies do not grow in desert sand
because water availability to these
plants in a desert is
1. a limiting factor.
2. the carrying
capacity.
3. a competition
factor.
4. none of the
above
0%
1
0%
0%
2
3
0%
4
A limiting nutrient is to
ecosystem productivity as a
limiting factor is to population
1.
2.
3.
4.
birthrate.
density.
growth rate.
immigration.
0%
1
0%
0%
2
3
0%
4
Each of the following is a densitydependent limiting factor EXCEPT
1. competition.
2. seasonal
cycles.
3. crowding.
4. disease.
0%
1
0%
0%
2
3
0%
4
Which would be least likely to be affected by
a density-dependent limiting factor?
1. a small, scattered
population
2. a population with a high
birthrate
3. a large, dense population
4. a population with a high
immigration rate
0%
1
0%
0%
2
3
0%
4
Which of the following is a densityindependent limiting factor?
1.
2.
3.
4.
earthquake
disease
emigration
parasitism
0%
1
0%
0%
2
3
0%
4
Which density-dependent factors other than the
predator/prey relationship affected the populations of
moose and wolves on Isle Royale?
1. extreme temperatures for the
moose and flooding for the
wolves
2. parasitic wasps for the wolves
and clear-cut forest for the
moose
3. a hurricane followed by drought
for both moose and wolves
4. food availability for the moose
and disease for the wolf
0%
1
0%
0%
2
3
0%
4
A disease resulting in the deaths of one third
of a dense population of bats in a cave would
be a
1. density-dependent
limiting factor.
2. result of exponential
growth.
3. density-independent
limiting factor.
4. nutrient-limiting factor.
0%
1
0%
0%
2
3
0%
4
Which of the following would NOT be a
limiting factor to the size of a large, dense
population?
1. a struggle for food, water,
space, or sunlight
2. predator/prey relationships
3. a struggle to find shelter
from a natural disaster
4. parasitism and disease
0%
1
0%
0%
2
3
0%
4
Human population growth has
slowed down in
1. China.
2. the United
States.
3. India.
4. Africa.
0%
1
0%
0%
2
3
0%
4
Demography is the scientific study of
1. parasitism and
disease.
2. modernized
countries.
3. human
0%
populations.
4. none of the above
1
0%
0%
2
3
0%
4
Demographic transition is change
from high birthrates and high death
rates to
1. exponential growth.
2. a low birthrate and a
low death rate.
3. a low birthrate and a
high death rate.
4. indefinite growth.
0%
1
0%
0%
2
3
0%
4
About 500 years ago, the
world’s population started
1. decreasing.
2. to reach carrying
capacity.
3. growing more
rapidly.
4. to level off.
0%
1
0%
0%
2
3
0%
4
Countries in the first stage of demographic
transition have
1. a low death rate and a
high birthrate.
2. a high death rate and a
low birthrate.
3. a slowly growing
population.
4. more old people than
young people.
0%
1
0%
0%
2
3
0%
4
Demographic transition begins
with changes in society that
1. lower the birthrate.
2. increase the
birthrate.
3. lower the death
rate.
4. increase the death
rate.
0%
1
0%
0%
2
3
0%
4
The human population experienced
exponential growth after
1. agriculture began.
2. plowing and
irrigation began.
3. the bubonic plague
began.
4. the Industrial
Revolution began.
0%
1
0%
0%
2
3
0%
4
Which country has not yet completed
the demographic transition?
1.
2.
3.
4.
United States
India
Great Britain
Japan
0%
1
0%
0%
2
3
0%
4
The anticipated human population
by the year 2050 is about
1.
2.
3.
4.
7.8 billion.
9 billion.
9 trillion.
78 billion.
0%
1
0%
0%
2
3
0%
4
In Rwanda, there are more young
children than teenagers, and more
teenagers than adults. This age
structure indicates a population that
1. has stopped growing.
2. will double in 30 years.
3. has a steady growth
rate.
4. will decrease in 30 years.
0%
1
0%
0%
2
3
0%
4
In countries like India, the
human population is growing
1.
2.
3.
4.
exponentially.
transitionally.
logistically.
demographically.
0%
1
0%
0%
2
3
0%
4
Most of the worldwide human population is growing
exponentially because
1. human populations have not
reached their exponential
curve.
2. human populations have not
yet completed the demographic
transition.
3. human populations do not
conform to the logistic model.
4. science and technology have
made it possible.
0%
1
0%
0%
2
3
0%
4
How can a diagram of a population’s age structure
predict how it can grow?
1. It shows how many people
are at reproductive ages.
2. It shows how many people
will probably die within a
few years.
3. It shows how many people
are entering the population
by birth.
4. all of the above
0%
1
0%
0%
2
3
0%
4
The number of individuals per
unit area is a population’s
growth rate.
1. True
2. False
0%
1
0%
2
If the death rate of a
population is greater than the
birthrate, the population
shrinks.
1. True
2. False
0%
1
0%
2
There are about four million births
per year in the United States. This
statistic is a population dynamic
called growth rate.
1. True
2. False
0%
1
0%
2
Logistic growth occurs when a
population’s growth slows or stops,
following a period of rapid growth.
1. True
2. False
0%
1
0%
2
Under conditions of logistic growth,
population size will rise and fall
around an average point called the
carrying capacity.
1. True
2. False
0%
1
0%
2
The exponential model of population
growth accounts for the influence of
carrying capacity.
1. True
2. False
0%
1
0%
2
One of the best-known mechanisms
of population control is the parasitehost relationship.
1. True
2. False
0%
1
0%
2
Predators can limit the size of
populations by weakening their
hosts, resulting in disease or death.
1. True
2. False
0%
1
0%
2
Human activities, such as damming
rivers, are density-independent
limiting factors.
1. True
2. False
0%
1
0%
2
Density-dependent limiting factors
affect all populations, whether the
population size is two or a hundred.
1. True
2. False
0%
1
0%
2
Resource shortages triggered by
increasing population size are
density-independent limiting factors.
1. True
2. False
0%
1
0%
2
The size of the human
population tends to increase
with time.
1. True
2. False
0%
1
0%
2
The human population grew slowly
from the beginning of human
existence, and then began to grow
exponentially about 200 years ago.
1. True
2. False
0%
1
0%
2
The population of a country whose
age structure has many more
children than people over 40 years of
age will probably decrease rapidly in
the future.
1. True
2. False
0%
1
0%
2
An indication that a country has
completed the demographic
transition is a low birthrate and a
low death rate.
1. True
2. False
0%
1
0%
2