Free Printable Ecology 7.2 and 7.3 Review

Worksheets

Ecology 7.2 and 7.3 Review

Total questions: 16

Worksheet time: 11mins

Name

Class

Date

The largest number of individuals that an environment can support long term is...

carrying capacity

emigration

immigration

population density

What happens if a population grows past its carrying capacity?

The population keeps growing

The population starts to die off

The entire species will go extinct

The carrying capacity just increases

Something that regulates the size of a population is called...

a limiting measure

a limiting factor

carrying capacity

biodiversity

What are factors that affect carrying capacity?

Biotic only

Biotic and abiotic

Depends on the ecosystem

Abiotic only

What is the carrying capacity of the graph?

1000

8000

800

600

What is the carrying capacity of the graph?

around 500

more than 800

less than 300

around 700

If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?

The bird population would stay the same

The bird population would infinitely increase

The bird population would decrease

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

keystone

invasive

engineer

predator

Where an organism lives

habitat

niche

heterotrogh

biosphere

10.

A keystone species fills a unique ecological niche and therefore carries unique functions in an ecosystem

True

False

11.

Food, water, sunlight, shelter, and space are resources that are __________.

limiting factors

wet

messy

found in rocks

12.

When a specific population grows past the ecosystem's carrying capacity, what happens to the population?

Density Independent limiting factors start to occur resulting in the population going farther above carrying capacity.

Density Dependent limiting factors start to occur resulting in the population going back below carrying capacity.

The population will go extinct due to lack of resources

The population grows then finds a new carrying capacity

13.

Excessive amounts of rain caused a flood in the southwest United States that resulted in substantial amounts of deaths in the rabbit population? This situation is an example of a density _____________ limiting factor.

density-independent

density-dependent

density- too high

density- too low

14.

A lion and a cheetah attempt to occupy the same niche. The more aggressive lion survives; the cheetah does not.

Density-Dependent: Competition

Density-Independent: Competition

Density-Dependent: Predator-Prey

Density-Independent: Predator-Prey

15.

Coyotes cross the winter pack ice and enter Newfoundland. The moose population starts to decline.

Density-Dependent: Competition

Density-Independent: Competition

Density-Dependent: Predator-Prey

Density-Independent: Predator-Prey

16.

Due to stress, large numbers of female lemmings miscarry their young and fail to reproduce.

Density-Dependent

Density-Independent

100 %

Ecology 7.2 and 7.3 Review

Total questions: 16

Worksheet time: 11mins

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