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CHAPTER 5 EXAM REVIEW:
1. Define demography
the scientific study of human populations
2. List some factors that might play a role in a population growth rate.
Immigration, emigration, death rate
3. What are the four characteristics of a population?
Geographic distribution, density, growth rate, and age structure
4. Which of those four characteristics describes the number of plants per square kilometer in a certain
area?
Population density
5. Define exponential growth.
When individuals in a population reproduce at a constant rate
6. The various growth phases through which most populations go are represented on what?
Logistic Growth Curve
7. In a logistic growth curve, exponential growth is the phase in which the population does what?
Grows quickly
8. What happens to a population when the resources it needs become less available?
Reaches carrying capacity
9. Define limiting factor.
A factor that causes population growth to decrease
10. List some limiting factors.
Predation, competition, human disturbances
11. What might reduce competition within a species’ population
Fewer individuals
12. What would happen if a population grows larger than the carrying capacity of the environment?
The death rate may rise
13. List some density-dependent limiting factors.
Competition, Crowding, disease
14.A disease resulting in the deaths of one third of a dense population of birds would be what kind of
limiting factor?
Density-dependent limiting factor
15. Define demographic transition.
The change from high birthrates and death rates to low birthrate and low death rates.
16. The human population experienced exponential after what event in history?
Industrial revolution
17. Be able to read a graph (you should already know how to do this)
18. Be able to state whether a graph shows exponential growth or logistic growth.