Population Factors

What is a limiting factor?

• Factors that always increase a population

• Factors that always decrease a population

• Resources that are unlimited

• Factors/resources that limit how many organisms can live in an area at the same time

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If there was a wildfire in the forest that destroyed the plant life, what would happen to the herbivore population?

• Herbivores would decrease due to a lack of food

• Herbivores would increase due to an increase of food

• Herbivores would not be affected

• Herbivores would decrease due to an increase in predators

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What does the carrying capacity of a population show?

• How many organisms live in the ecosystem

• The maximum number of organisms that an ecosystem can support for a long period of time

• The minimum number of organisms that can live in an area

• The types of organisms living somewhere

Can a population go over its carrying capacity?

• Yes

• No

• Maybe

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What happens if a population goes over its carrying capacity?

• It will continue to grow

• It will eventually decrease due to a lack of resources

• It will die immediately

• It will get unlimited resources

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following would lead to a decrease in tertiary consumers?

• An increase in herbivores and omnivores

• An increase in rain

• A decrease in competition

• A new carnivore population moving to the area

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

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

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The wolf goes extinct, and the deer population has no predator to worry about. They graze the land. Because there is no more food. Some of the deer begin to bite at each other, while others die of starvation. What is the limiting factor to the deep population?

• Competition

• Overpopulation

• Predator-Prey Relationships

• Herbivory Effect

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of these factors do not respond to the density of a population in an ecosystem?

• Density Dependent Limiting Factors

• Density Independent Limiting Factors

• Herbivory Effect

• Competition

What is the carrying capacity of the following graph?

• 1000
• 8000
• 800
• 600

Tags

NGSS.HS-LS2-1