Population Growth

An extensive drought in the plains threatens wildebeest, giraffe, zebra, and springbok populations.

• Density-Dependent

• Density-Independent

Many fish die due to a drastic change in water temperature.

• Density-Dependent

• Density-Independent

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

• human activities

• unusual weather

• competition

• natural disaster

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

• natural disaster
• predation
• disease
• parasitism

Limiting factors that affect all populations in similar ways, regardless of population size are

• tolerant

• density dependent

• carrying capacity

• density independent

The maximum number of individual organisms that an ecosystem can comfortably support is

• exponential growth

• carrying capacity

• population

• tolerance

Limiting factor that depends on population size

Ex: competition, predation and herbivory, parasitism and disease, stress from overcrowding

• density dependent

• density independent

• carrying capacity

• tolerance

What do we call the part of the graph where the line starts to flatten out?

• carrying capacity

• logistical growth

• exponential growth

What type of factor has an increasing impact as the population size increases?

• density-independent

• density-dependent

• cohort effect

• survivorship factor

Which of the following are examples of a density independent factors?

• forest fire

• seasonal cycles

• storms

• disease