Community Ecology Review

​Community Ecology Review

By Heather Glazebrook

Match

Match the levels of Ecology to their description

• An individual living thing.

• A group of individuals of the same species living in the same area at the same time.

• All the different populations that live together in one area.

• All living (biotic) and non-living (abiotic) components of an area and their interactions.

• Large regions with similar climates, plants, and animals.

Organism

Population

Community

Ecosystem

Biome

• Organism

• Population

• Community

• Ecosystem

• Biome

Multiple Choice

Which of the following is a biotic factor that would affect the carrying capacity of a population?

• Soil

• Predator

• Rainfall

• Sunlight

Multiple Choice

Which statement best describes the predator-prey relationship displayed on this graph?

• There is no relationship between the predator and prey.

• When the prey population increases, the predator population decreases.

• When the prey population increases, the predator population increases.

• when the predator population increases, the prey population increases.

Multiple Choice

What is carrying capacity?

• A condition that occurs when two or more organisms compete for the same resources within an ecological community

• A relationship in which two organisms are mutually dependent on each other for survivial

• All the biotic and abiotic factors and the interactions among them in a given area

• The maximum number of organisms an ecosystem can support

Multiple Choice

A condition that occurs when two or more organisms compete for the same resources within an ecological community

• Interdependent Relationship

• Carrying Capacity

• Competition

• Ecosystem

Multiple Choice

Which statement best describes the term limiting factors?

• All the biotic and abiotic factors and the interactions among them in a given area

• A finite resource organisms in an ecosystem require

• The biotic and abiotic factors in an ecosystem

• The maximum number of organisms an ecosystem can support

Multiple Select

The graph pictured here shows:

• Rapid Growth

• Exponential Growth

• Linear Growth

• Logistic Growth

Multiple Choice

Competition begins when a population reaches its carrying capacity.

• True

• False

Multiple Choice

Carrying capacity is the amount of individuals in a population that an ecosystem can hold __________ competition.

• with

• without

Multiple Choice

What is the carrying capacity of the population approximately?

• 150

• 200

• 250

• 300

Multiple Choice

During which year did the population reach its carrying capacity?

• 1

• 2

• 3

• 4

Multiple Choice

What is the carrying capacity of the population?

• 20

• 40

• 60

• 80

Multiple Choice

Which is NOT an example of a limiting factor.

• Climate
• Available Food & Water
• Available Space & Shelter
• Species color

Multiple Choice

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

• limiting factors

• wet

• messy

• found in rocks

Multiple Choice

If the population of a certain predator increases, there is often _______ its prey

• a decrease the population of
• an increase of the population of 
• great news for its prey of
• no  impact found on

Multiple Choice

If there is more food than usual in an ecosystem, then...

• Populations will stay the same
• Populations will decrease
• Populations will increase

Multiple Choice

Any thing or organism that regulates the size of a population of another organism is known as __________.

• a limiting measure
• a limiting factor
• factorization
• materialization of precipitation

Multiple Choice

A species form that supports an entire ecosystem.

• Keystone Species

• Herbivores

• Umbrella Species

• Predators

Multiple Choice

Why are bees considered a keystone species?

• The honey they make supports the bear population

• They pollinate flowers that produce fruit which supports the ecosystem

• They sting when threatened

• They live in hives

Multiple Choice

Why are some sharks considered a keystone species?

• Because they are a top predator

• They scare off smaller fish that may overgraze an area of sea grass

• They are tertiary consumers

• They are cartilaginous

Multiple Choice

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

• keystone

• invasive

• engineer

• predator

Multiple Choice

Based on the graph shown, how can you tell sea otters are a keystone species?

• as the sea otter population decreases, biodiversity increases
• as sea otter population increases, biodiversity increases
• changes in the sea otter population have little effect on biodiversity 
• the sea otter population dereases due to the presence of urchins

Multiple Choice

The picture display which type of succession?

• primary

• secondary

• tertiary

• all of the above

Multiple Choice

The picture displays which type of succession?

• primary

• secondary

• tertiary

• all of the above

Multiple Choice

What is the name given to lichen/algae during primary succession?

• pioneer species

• volunteer species

• founder species

• conqueror species

Multiple Choice

After a volcanic eruption, volcanic rock is present (but no soil). Which of the following states the most likely order of succession that would be seen?

• Lichens → Shrubs → Grasses → Trees

• Lichens → tree → shrubs→Grasses

• Grasses → Lichens → Shrubs → Trees

• Lichens → Grasses → Shrubs → Trees

Multiple Choice

Natural disasters such as flooding,forest fires, and tornadoes are associated with which type of succession?

• primary

• secondary

• Gordito

• ecosystem

Multiple Choice

Why does primary succession typically occur over a longer period of time (as compared to secondary succession)?

• Because trees do not perform respiration

• Because the climax community is usually a forest.

• Because primary succession already has soil

• Because primary succession does not begin with soil being present

Multiple Choice

What is an example of an area that is likely to undergo primary succession?

• Glaciers melt and leave exposed rock

• Plants die from drought and decompose

• Land is bulldozed and soil remains

• A forest fire occurs

Multiple Choice

An increase in biodiversity or a progression over time -after a natural or man made disturbance - is called what?

• ecological recession

• climax recession

• ecological succession

• climax succession

Multiple Choice

The final stage of ecological succession can typically be observed when evidence of a _____________________ is present.

• Mature Tree Growth

• Climax Community

• Pioneer Community

• housing community

Multiple Choice

What are the pioneer species for secondary succession?

• Trees and shrubs

• Mosses and lichens

• Grasses and weeds

• Fruits and Vegtables

Multiple Choice

What type of succession occurs in an area that once had plants and animals, then there was a disturbance (like a forest fire) and now only has soil?

• Primary

• Secondary

• Tertiary

• Quaternary

Multiple Choice

What type of succession occurs in an area that has no soil, for example a lava flow.

• Primary

• Secondary

• Tertiary

• Quaternary

Multiple Choice

What is the definition of resilience?

• The ability to avoid challenges

• The ability to recover quickly from difficulties

• The ability to predict the future

• The ability to control others

Multiple Choice

Explain the concept of ecological resilience.

• The ability of an ecosystem to easily succumb to disturbances and lose its essential functions and structure.

• The ability of an ecosystem to resist disturbances but not recover from them, leading to a permanent loss of essential functions and structure.

• The ability of an ecosystem to resist and recover from disturbances while maintaining its essential functions and structure.

• The ability of an ecosystem to adapt to disturbances by completely changing its functions and structure.

Multiple Choice

How can ecological resilience be enhanced in ecosystems?

• By ignoring habitat degradation and implementing unsustainable management practices

• By increasing human impact and exploiting natural resources

• By reducing human impact, promoting biodiversity, restoring degraded habitats, and implementing sustainable management practices.

• By introducing non-native species and reducing biodiversity

Multiple Choice

Biodiversity, aka biological diversity, usually refers to

• the same species in a general location

• the number of different species in a given area

• the number of animal species in a given area

• the number of plant species in a given area

Multiple Choice

Great Biodiversity = Great Sustainability

• True

• False

Multiple Choice

Why is "A" less biodiverse than "B"?

• Image "A" is more biodiverse.

• Image "A" has many corn plants and this makes it have high "rich" biodiversity.

• Image "A" has a lot more plants than image "B"

• Even though "A" has a lot of corn plants they are all the same species and makes this a low "poor" biodiverse area.