Population Exam Reivew

What does the term carrying capacity describe?

• The maximum number of birth rates for a population.

• The ability of a population to accept new immigrants.

• The ratio of birth rates to death rates in a population.

• The population size that the environment can sustain.

A Density Independent Limiting Factor is a limiting factor of a population that can affect population growth no matter what the population density. What is a density independent limiting factor that can affect the human population growth of North Carolina?

• disease

• hurricanes

• food supply

• water supply

What is the carrying capacity of the following graph?

• 1000
• 8000
• 800
• 600

What type of growth is shown in the diagram?

• exponential growth
• logistic growth 
• predator-prey cycle
• boom-bust curve

Which of the following is a density-dependent limiting factor?

• human activities

• unusual weather

• competition

• natural disaster

If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?

• It will increase.
• It will decrease.
• It will stay the same.
• It will fluctuate.

What is the carrying capacity for this sheep population?

• 1.8 million
• 1.25 million
• 1.6 million
• 1.o million

An environmental factor such as predation, disease, and competition that depends on the number of members in a population per unit (or area) is called ___________.

• dispersion

• density- independent factor

• density- dependent factor

• Scattered points

When a population grows past the ecosystem's carrying capacity, what happens to the population?

• Continues to grow
• The population starts to die off to return to carrying capcity
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

What does the whole right side of the population pyramid represent?

• Males

• Females

• Unemployed

• Young people