Population Ecology Graphs and Carrying Capacity

What are survivorship curves?

• curves that describe the number of survivors over time

• curves that tell us what the limiting factors are

• curve that tells us about the carrying capacity

• a curve

Tags

NGSS.HS-LS2-2

What is the arrow pointing at?

• carrying capacity

• biotic potential

• density-independent

• density dependent

What is ecology?

• the study of interactions between organisms and their environments

• the study of animals

• the study of how genes are passed down from generation to generation

• the study of rocks

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-3

What two factors decrease the population size?

• Births

• Deaths

• Immigration

• Emigration

Answer explanation

Deaths + emigration (individuals leaving the population) cause the population size to decrease.

Carrying capacity is the ​ (a)   number of organisms that can survive in an area based on the available ​ (b)   , such as food and water.

• maximum

• resources

• minimum

• predators

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In a forest, the carrying capacity for squirrels is about 100. If humans cut down part of the forest to build houses, what will happen to the carrying capacity for the squirrels?

• it will increase

• it will decrease

• it will stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A population of foxes has 36 individuals. In one year, 10 baby foxes are born and 6 older foxes die. The population at the end of the year is (a)   .

Answer explanation

36 + 10 - 6 = 40

Type 2 curve shows us

• deaths at the end

• the graph going down

• constant death at all stages

• death at the beginning

What two factors increase the population size?

• Births

• Deaths

• Immigration

• Emigration

Answer explanation

Births + immigration (individuals joining the population) cause the population size to increase.

One of the factors that can change the size of population is....

• Name of schools

• Number of dezs

• Jobs

• Numbers of births

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4