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chapter 5

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

1. 
Which of the following is NOT one of the four factors that play a role in growth rate?
a.
immigration
b.
death rate
c.
emigration
d.
demography
 

2. 
Which of the following tells you population density?
a.
the number of births per year
b.
the number of frogs in a pond
c.
the number of deaths per year
d.
the number of bacteria per square millimeter
 

3. 
When organisms move into a given area from another area, what is taking place?
a.
immigration
b.
emigration
c.
population shift
d.
carrying capacity
 

4. 
When organisms move out of the population they were born in, it is known as
a.
emigration.
b.
abandonment.
c.
immigration.
d.
succession.
 

5. 
What occurs in a population as it grows?
a.
The birthrate becomes higher than the death rate.
b.
The birthrate stays the same and the death rate increases.
c.
The birthrate becomes lower than the death rate.
d.
The birthrate and the death rate remain the same.
 

6. 
What is happening in a population as it decreases?
a.
The birthrate and the death rate remain the same.
b.
The death rate becomes lower than the birthrate.
c.
The death rate stays the same and the birthrate increases.
d.
The death rate becomes higher than the birthrate.
 

7. 
Which of the following describes how fast the human population is growing?
a.
slowly
b.
The population is remaining stable.
c.
exponentially
d.
The population is decreasing.
 

8. 
In a logistic growth curve, exponential growth is the phase in which the population
a.
reaches carrying capacity.
b.
grows quickly and few animals are dying.
c.
growth begins to slow down.
d.
growth stops.
 

9. 
A biotic or an abiotic resource in the environment that limits the size of a population is a
a.
carrying capacity.
b.
limiting nutrient.
c.
limiting factor.
d.
growth factor.
 

10. 
The number of organisms that an environment can support over a relatively long period of time is called
a.
carrying capacity.
b.
logistic growth.
c.
exponential growth.
d.
limiting factor.
 

11. 
Water lilies do not grow in desert sand because water availability to these plants in a desert is
a.
a limiting factor.
b.
the carrying capacity.
c.
a competition factor.
d.
parasitism.
 

12. 
Each of the following is a density-dependent limiting factor EXCEPT
a.
competition.
b.
predation.
c.
crowding.
d.
disease.
 

13. 
Which of the following is a density-dependent factor?
a.
earthquake
b.
disease
c.
emigration
d.
immigration
 

14. 
A disease resulting in the deaths of one-third of a dense population of bats in a cave would be a
a.
density-dependent limiting factor.
b.
result of the demographic transition.
c.
density-independent limiting factor.
d.
result of social and economic factors.
 

15. 
Human population growth has slowed down in
a.
China.
b.
the United States.
c.
India.
d.
Africa.
 

16. 
Demography is the scientific study of
a.
democratic societies.
b.
modernized countries.
c.
human populations.
d.
economic transitions.
 

17. 
The demographic transition is change from high birthrates and high death rates to
a.
exponential growth.
b.
a low birthrate and a low death rate.
c.
a low birthrate and a high death rate.
d.
indefinite growth.
 

18. 
About 500 years ago, the world’s population started
a.
decreasing.
b.
to reach carrying capacity.
c.
growing more rapidly.
d.
to level off.
 

19. 
The anticipated human population by the year 2050 may be about
a.
7.8 billion.
b.
9 billion.
c.
9 trillion.
d.
78 billion.
 

20. 
In countries like India, the human population is growing
a.
exponentially.
b.
transitionally.
c.
logistically.
d.
demographically.
 



 
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