If you were to graph the data in the table, it would show:

An increase in the population over time.

A decrease in the population over time.

The population staying the same over time.

An increase in population at first, followed by a decrease over time.

What might be causing the pattern in these data?

the population's Predators became less abundant

the population's food resources became less abundant

the population's habitat became less abundant

the population's competitors became more abundant

Which of the following is an example of mutualism?

a coneflower being pollinated by a bee

a mosquito feeding on the blood of a bison

a mouse and a bird eating the same kind of seed

Which statement best describes an important difference between plants and animals?

Plants use carbon dioxide from the air and water to make their own food while animals get food by eating other organisms.

Plants get food from the soil while animals get food by eating other organisms.

Animals are alive but plans are not.

Animals use energy stored in food but plants do not.

The word "ecosystem" refers to:

living organisms and the physical environment

living organisms in the laboratory

Solutions to problems caused by invasive species:

involve identifying criteria and constraints

require using every possible treatment regardless of the trade-offs

An ecologist used the transect method to investigate a forest. They ran a transect line from the edge of the forest towards the interior of the forest. The data they collected in the six quadrants spaced 20 m apart are as follows: What pattern do you see in the number of native birds?

The number of native birds increases from The edge to the interior of the forest.

The number of native birds increases from the interior to the edge of the forest.

The number of native birds shows no pattern.

No pattern can be detected because there were no birds towards the edge of the forest.

An ecologist used the transect method to investigate a forest. They ran a transect line from the edge of the forest towards the interior of the forest. The data they collected in the six quadrants space 20 M apart are as follows: What pattern do you see in the plants along the transect from the edge to the interior?

The number of native plants increases while the number of non-native plants remains the same.

The number of native plants increases while the number of non-native plants decreases.

The number of native plants remains the same while the number of non-native plants increases.

The number of native plants and non-native plants both increase.

An ecologist used the transect method to investigate a forest. They ran a transect line from the edge of the forest towards the interior of the forest. The data they collected in the six quadrants space 20 M apart are as follows: What might be causing the above patterns?

Both native plants and birds prefer lower temperatures.

Non-native plants prefer higher temperatures.

Both native plants and non-native plants prefer lower temperatures.

Native birds prefer non-native plants.

Which of the following statements about introduced species is TRUE?

Their impact on the local ecosystem is difficult to predict.

Most were introduced intentionally by people.

They are more likely to cause problems in natural areas than in urban areas.

They are unlikely to cause problem for people.

What does ecologist mean?

Species that exist outside of the species' normal range because of human activity.

The study of the relationships of organisms to one another and to the physical environment.

A person that makes rules that scientists must follow.

What does introduced species mean?

Species that exist outside of the species' normal range because of human activity.

The study of the relationships of organisms to one another and to the physical environment.

A group of organisms of the same species living in the same habitat.

Based on your reading in Activity 1, how did the amount of Nile perch caught in Lake Victoria change from the 1960s to 1990?

The number of Nile perch caught increased quite a bit.

The number of Nile perch caught decreased quite a bit.

The number of Nile perch caught stayed the same over that time period.

It depended on the year how much Nile perch was caught, but most years the numbers went down.

In Activity 1, how did the introduction of Nile perch affect the people who lived near Lake Victoria?

All of the answers are things that happened to the people that lived near Lake Victoria.

It provided income for the people who caught the fish.

Some people were no longer able to catch fish because they did not have the right equipment.

It may have provided food for some people in the area, but other people may not have had enough food to eat because they couldn't afford to buy the Nile perch and there were no longer enough cichlids to catch to eat.

In Activity 1, what effect did the introduction of Nile perch have on cichlids and other organisms that live in the lake?

The number of cichlids and other types of fish went down. Some to extinction. This also lead to algae growth in the lake creating dead zones.

There was no change in the environment when they added the Nile perch.

The amount of cichlids in the lake increase and the Nile perch population went down.

Nile perch could not survive in the lake and they went extinct.

In Activity 2, what kinds of human activities seem to lead to problems with introduced species?

All of the answers are correct.

People brought plants or animals with them to remind them of home or because they thought the species would solve a problem.

Species were brought to other places on accident as stowaways in packages.

People release pets that they no longer want into the wild.

Disruptions in ecosystems:

can be caused by abiotic and biotic factors.

can lead to short-term changes but not long-term changes.

can lead to increased stability in the ecosystem.

The main reason some introduced species survive and overpopulate an area is that:

there are few natural predators in the area.

there is not enough food for other organisms.

most organisms can survive in new habitats

Ecology Test Review 2024

Authored by Amanda Bralley-garner

others

6th - 8th Grade

Used 8+ times

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57 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The role of decomposers in an ecosystem is to:

convert the sun's energy into energy stored as food

convert plant matter into matter that can be used by animals

eat other living organisms for energy

break down dead and waste matter

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A new species of fish has been introduced into Lake Hiawatha. This fish eats minnows, a smaller fish that already live in the lake. What is the most likely to happen to the population of minnows in Lake Hiawatha?

it will increase

it will decrease

it will stay the same

it will first increase, then decrease

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A new species of fish has been introduced into Lake Hiawatha. This fish eats minnows, a smaller fish that already live in the lake. What is most likely to happen to the population of the new species of fish in Lake Hiawatha?

it will increase

it will decrease

it will stay the same

it will first increase, then decrease

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A new species of fish has been introduced into Lake Hiawatha. This fish eats minnows, a smaller fish that already live in the lake. The introduction of this new species of fish into Lake Hiawatha provides an example of :

competition

parasitism

predation

mutualism

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Not changing or resistant to change is the definition for what word?

disruption

unstable

stable

food web

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A disturbance that effects an ecosystem is the definition for what word?

disruption

unstable

stable

food web

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An organism that gets its food from dead organisms and wastes from living organisms is the definition for what word?

decomposer

consumer

producer

omnivore

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Ecology Test Review 2024

The role of decomposers in an ecosystem is to:

A new species of fish has been introduced into Lake Hiawatha. This fish eats minnows, a smaller fish that already live in the lake. What is the most likely to happen to the population of minnows in Lake Hiawatha?

A new species of fish has been introduced into Lake Hiawatha. This fish eats minnows, a smaller fish that already live in the lake. What is most likely to happen to the population of the new species of fish in Lake Hiawatha?

A new species of fish has been introduced into Lake Hiawatha. This fish eats minnows, a smaller fish that already live in the lake. The introduction of this new species of fish into Lake Hiawatha provides an example of :

Not changing or resistant to change is the definition for what word?

A disturbance that effects an ecosystem is the definition for what word?

An organism that gets its food from dead organisms and wastes from living organisms is the definition for what word?

A diagram that models feeding relationships within an ecosystem is the definition for what word?

A simple model of energy flow within a food web is an?

When an ecosystem does not return to its original state and it changes permanently it is said to be?

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