Energy Flow in Ecosystems-Day 3

Limiting Factors and Carrying Capacity

Learning Target

• I can investigate limiting factors, carrying capacity, and exponential growth to a population and represent these terms graphically.

  
  

• I can identify and determine the cause and effect relationships between resources and the numbers of organisms in ecosystems during periods of abundant and scarce resources.

Multiple Choice

When there is a lack of resources such as food, water, sunlight, shelter, and space this is often called __________.

• limiting factors
• wet
• messy
• found in rocks

Multiple Choice

Limiting factors are sometimes helpful because they can keep the population from getting too large.

• True
• False

Multiple Choice

Environmental factors that keep a population from increasing. 

• Carrying Capacity
• Limiting Factors

Multiple Choice

All members of one species in a certain area.

• Population
• Limiting Factors
• Immigration
• Birth Rate

Multiple Choice

Hawks and owls eat the same type of food and struggle with one another to get their food. What is this an example of?

• Competition

• Biotic factor

• Symbiosis

• Population

Multiple Choice

Living things depend on many different _________ in order to survive.

• resources
• environments
• ecosystems
• interactions

Multiple Choice

If a disease strikes the snake population in the food chain shown, what will be the initial effect on the populations of hawks and rabbits?

• The populations of hawks and rabbits will decrease.

• The populations of hawks and rabbits will increase.

• The population of hawks will increase. The population of rabbits will decrease.

• The population of hawks will decrease. The population of rabbits will increase.

Multiple Choice

Field mice eat corn. Which would most likely happen if the field mouse population grew?

• There would be more corn to feed the field mice.
• There would be less corn due to the mice eating it.
• The habitat would get overpopulated because the mice woudl eat too much.

Multiple Choice

In Predator/Prey Graphs what happens to Predator numbers if Prey numbers increase.

• The predator numbers INCREASE

• The predator numbers DECREASE

Multiple Choice

In a meadow ecosystem, a population of rabbits increases. What populations are most likely to increase as a result?

• foxes, hawks, and other predators of the rabbits

• leafy plants that rabbits eat

• rabbits that live elsewhere

• worms that live in the meadow soil

Multiple Choice

In an ecosystem, snakes feed on frogs, which feed on mosquitoes. Use of a bug spray has decreased the number of mosquitoes. What will probably happen to the number of frogs and snakes?

• Frogs will increase, snakes will increase

• Frogs will increase, snakes will decrease

• Frogs will decrease, snakes will increase

• Frogs will decrease, snakes will decrease

Multiple Choice

When birth rate is high and death rate is low...

• population increases

• population decreases

• population stays the same

• all of these

Multiple Choice

When the death rate rises and the birth rate lowers...

• population increases

• population decreases

• population stays the same

• all of these

Multiple Choice

When death rate is equal to birth rate...

• population increases

• population decreases

• population stays the same.

• population rapidly increases then becomes stable

Multiple Choice

Something that regulates the size of a population is called...

• a limiting measure

• a limiting factor

• carrying capacity

• biodiversity

Multiple Choice

This may cause a population to increase

• increase of food supply

• removal of predators

• removal of disease

• all of these

Multiple Choice

What happens if a population grows past its carrying capacity?

• The population keeps growing

• The population starts to die off

• The entire species will go extinct

• The carrying capacity just increases