Ecology Review 3

What factor describes when populations increase because animals are moving into a population?

• Emigration
• Limiting Factors
• Immigration
• Exponential Growth

What factor describes when populations decrease because animals are moving out of a population?

• Emigration
• Limiting Factors
• Immigration
• Exponential Growth

What does the graph represent?

• Emigration
• Exponential growth
• Immigration
• Logistic Growth

Logistic growth has 3 phases. In Phase 1, the population grows rapidly. In Phase 2, population grows slowly. In Phase 3, growth stops. What causes growth to stop in the 3rd phase of logistic growth?

• Emigration
• Immigration
• Exponential Growth
• Carrying Capacity

True or False: Limiting factors can be population dependent and population independent.

• True

• False

Which limiting factor would increase due to the number of individuals in a population?

• Unusual weather
• Natural disaster
• Births
• Disease

Which limiting factor is independent of the number of individuals in a population?

• competition
• parasitism/disease
• stress
• natural disasters

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.

Largest number of individuals of a population that the environment can support...  

• carrying capacity
• population crash
• lag phase
• mutualism

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