Population Dynamics

What is carrying capacity

• The minimum amount of individuals from a species that a habitat can hold

• The maximum amount of individuals from a species that a habitat can hold

• The amount of resources available at any given time

• The amount of resources used by animals

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is true of this population pyramid?

• It has a very young population

• It has a mostly middle aged population

• It has an older population

• We cannot tell from this pyramid

There are 50 individuals in a population and 15 more are born. 10 individuals die and 10 leave, but 20 individuals enter the area for the first time. What is the new population size?

(Birth + Immigration) - (Death + Emigration) = Pop. growth

• 20

• 15

• 10

• -10

Tags

NGSS.MS-LS2-4

Which two things increase a population size

• Birth and emigration

• Death and immigration

• Birth and Immigration

• Death and emigration

What happens when a population overshoots its carrying capacity

• Nothing Happens

• More animals are born

• Each animal gets less resources to make room for more animals

• There are not enough resources to go around and some animals will die

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is true of this population pyramid?

• There are more females than males

• The population is mostly young

• There are more males than females

• The population is very old

Tags

NGSS.HS-LS2-2

Which two things decrease a population size?

• Birth and emigration

• Death and immigration

• Birth and immigration

• Death and emigration

Tags

NGSS.MS-LS2-4

What is the line marked K on this graph?

• The population growth

• The carrying capacity

• The population starting point

• The population curve

Tags

NGSS.HS-LS2-1

There are 10 individuals in a population and 15 more are born. 10 individuals die and 10 leave, but 5 individuals enter the area for the first time. What is the new population size?

(Birth + Immigration) - (Death + Emigration) = Pop. growth

• 20

• 15

• 25

• 10 - the population did not change

What can we say about this population pyramid

• This population is growing a lot

• This population has declining growth

• This population has slow growth

• We cannot say any of these things

Tags

NGSS.MS-LS2-4