Quiz #2 Review

Quiz #2 Review

How does this review work?

• You'll see a question. Answer it!

• We'll go over the answer.

• You should add notes/helpful hints to your notebook.

Multiple Choice

What is a population?

• The North Cascades National Park

• A herd of elk

• A herd of elk and cougars

• A herd of elk and forest they live in

A population...

consists of all the individuals of a species that live together in one place at one time (pg 320)

Multiple Select

Which is not a factor that determines a populations future?

• Population Size

• Population Density

• Dispersion

• Population Model

A population model is how scientists predict what might happen to a population

It is a hypothetical population

Multiple Choice

This is an example _________ dispersion

• clumped

• ramdom

• even

Random dispersion

• location of individual is self-determined or determined by chance (pg 321)

Multiple Choice

What time of growth curve is this?

• exponential

• logistic

Exponential Growth

The per captia growth rate doesn't change even if the population gets very large (pg 322)

Multiple Choice

What type of growth curve is this?

• exponential

• logistic

Logistic Growth

• per capita growth rate gets smaller as the population approaches its maximum size (page 323)

Multiple Select

Carrying Capacity (select multiple options)

• is modeled on a logistic growth curve

• is the population size that an environment can sustain

• how much you can physically carry

Carrying Capacity

A population size may jump above or below the carrying capacity. This is very common to occur around the carrying capacity line rather than forming a perfectly straight line (pg 323)

Multiple Choice

Which is NOT an example of density dependent factors?

• Competition within the population

• fire

• diseases and parasites

• waste accumulation

• predation

Fire!

Density-dependent factors tend to be biotic -living organism-related as opposed to physical features of the environment

Multiple Choice

What is not an example of density-independent factors?

• wildfire

• flood

• competition

• severe weather

• pollution

Competition

Density-independent factors can't keep a population at constant levels. These factors may lead to erratic, abrupt shifts in the population size (pg 324)

Multiple Choice

Elephants are example of what type of strategist?

• k

• r

K-strategists

slowly growing population

long life span

few young

(pg 325)

Multiple Choice

Which is not true about r-strategists?

• small population

• short life span

• cockroaches

• often described as exponential growth model

R-strategists have large populations

Think...mosquitos and cockroaches

Quiz tomorrow during your class!

Good luck! You will do awesome!