Ecology Unit exam (Lab 9a, 10, &12)

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

• Density Independent limiting factors start to occur resulting in the population going farther above carrying capacity.
• Density Dependent limiting factors start to occur resulting in the population going back below carrying capacity.
• The population will go extinct due to lack of resources
• The population grows then finds a new carrying capacity

What is the carrying capacity of the graph?

• around 500
• more than 500
• less than 500
• around 600

What is the carrying capacity of the following graph?

• 1000
• 8000
• 800
• 600

The total number of individuals a habitat can support with the resources it has available.

• Carrying capacity
• Limiting factors
• Resources
• Population

If the amount of food or resources available increases, the carrying capacity for an animal:

• Stays the same
• Increases
• Decreases
• Fluctuates

Excessive amounts of rain caused a flood in the southwest United States that resulted in substantial amounts of deaths in the rabbit population? This situation is an example of a density _____________ limiting factor.

• density-independent
• density-dependent
• density- too high
• density- too low

Limiting factors which impact the size of a population no matter how large that population is.

• Density Independent Limiting Factors
• Density Dependent Limiting Factors
• Carrying Capacity
• Exponential Growth

Two arctic fox are fighting with a polar bear for a sea lion carcass. One fox distracts the bear while the other eats. What type of limiting factor is the polar bear?

• Predator-Prey Relationships

• Competition

• Herbivory Effect

• Weather

A group of elephants gets stuck in mud at the edge of the river from a recent mud slide. A lion waits for an elephant to get tired before it attacks. What is the limiting factor to the elephant population?

• Disease

• Natural Disaster

• Herbivory Effect

• Competition

This may cause a population to increase

• increase of food supply

• removal of predators

• removal of disease

• all of these