Understanding Populations

Density is the number of individuals of the same species in that live in a given unit of area. Which statement is TRUE for populations with high density.

• Tends to be less competition

• Less infectious disease

• Finding mates is easier

• More vulnerability to predators

What two factors increase the population size?

• Births

• Deaths

• Immigration (entering the area)

• Emigration (leaving the area)

Describe the population pyramid birth rate.

• Fast birth rate

• Slow birth rate

• No increase or decrease in birth rate

• Decreases quickly

The dispersion pattern (distribution pattern) of a population describes the arrangement of individuals within a habitat at a particular point in time -

A large population of geese gathered together in a marsh is which type of dispersion?

• Random Dispersion

• Clumped Dispersion

• Uniform Dispersion

Density is the number of individuals of the same species in that live in a given unit of area. Which statement is TRUE for populations with low density. (There are 3 correct answers here.)

• Finding a mate is difficult

• More space

• More infectious disease

• More resources/food

If you are counting the number of deer in a 10 acre area of hunting land in Washara county, you are measuring the

• density

• population

• distribution

• growth

Tags

NGSS.MS-LS2-4

A set of individuals within a species living in the same place at the same time is called a/an

• density

• dispersion

• carrying capacity

• population

The numbers of individuals per unit area or volume is referred to as a/an

• density

• dispersion

• population

• niche

The population size where birth rates and death rates are equal is called

• competition

• resource limits

• carrying capacity

• population growth

Using the following equation, what is the fish population change starting with 100 fish: (day 1) 6 births & 4 deaths, (day 2) 8 births & 5 deaths, (day 3) 2 births & 6 deaths, (day 4) 4 births & 2 deaths, (day 5) 4 births & 0 deaths.

• 105 fish

• 106 fish

• 107 fish

• 108 fish

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1