Free Practice Quiz Question List

11 Human Impacts and Conservation Online Quiz Questions

Use this free practice quiz with 20 questions to review 11 Human Impacts and Conservation, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

A region designates an important area for conservation but does not plan or manage it afterward. Is designation alone sufficient to achieve effective conservation?

A
True
B
False

True or false

1 point

Can the combined effects of multiple human pressures on a population or ecosystem be greater than the effect of any single pressure?

A
True
B
False

Written response

1 point

A new road divides one continuous forest into several smaller patches. What process has occurred?

Fill in the blank

1 point

A fishery removes fish faster than the population can replace them. This pressure is called .

Choose one

1 point

A fish population is declining because fish are being removed faster than they can be replaced. Which management action best addresses the cause?

A
Increase harvesting whenever demand rises, regardless of population trends.
B
Set harvest levels so removal does not exceed replenishment.
C
Harvest only the largest individuals, without monitoring population changes.
D
Stop monitoring the population once a harvest limit is set.

Choose one

1 point

Fertilizer runoff adds excess nutrients to a lake. Which outcome is most likely if algae grow rapidly and then decompose?

A
Algal growth stops, increasing dissolved oxygen and improving conditions for all aquatic life.
B
Algae permanently remove all nutrients from the water, preventing later ecosystem changes.
C
Algal growth increases, and decomposition can deplete dissolved oxygen and harm aquatic life.
D
Algae make the water more fertile for fish by directly increasing oxygen during decomposition.

Choose all

1 point

A road and new development divide a habitat into small patches. Select all effects that can follow from this fragmentation.

A
Populations may become isolated from one another.
B
Organisms can move more easily between feeding, breeding, and shelter areas.
C
Movement between feeding, breeding, and shelter areas may be disrupted.
D
Small populations may become more vulnerable to local extinction or loss of genetic diversity.

Choose all

1 point

Which actions are described as useful conservation or restoration approaches? Select all that apply.

A
Protect important habitats and connect habitat patches.
B
Manage harvesting so it does not exceed replenishment.
C
Reduce pollution and greenhouse-gas emissions.
D
Restore degraded habitats and monitor whether populations and ecosystem functions improve.
E
Designate an area for conservation but never plan or manage it.

Written response

1 point

A project helps a damaged wetland recover its habitat and ecosystem functions. What is this approach called?

Fill in the blank

1 point

When vegetation is removed, the ecosystem’s carbon can change.

Choose one

1 point

Conditions suitable for a species shift to a new region and season. The species cannot move or adapt quickly enough. What is a likely consequence?

A
The species is guaranteed to thrive because its current habitat remains unchanged.
B
The species may decline if it cannot move or adapt quickly enough to changing conditions.
C
The species will necessarily become invasive in its current range.
D
The species’ population must increase because climate change affects only ecosystem processes.

True or false

1 point

Any species introduced beyond its natural range is an invasive alien species, even if it causes no harm.

A
True
B
False

Choose one

1 point

Which description best captures biodiversity?

A
Only the number of animal species in an area.
B
Only the variety of ecosystems, excluding genes and species.
C
Variation among genes, species, and ecosystems.
D
The total number of individuals in one population.

Open ended

1 point

A coastal ecosystem is experiencing habitat loss, excessive harvesting, and pollution. Describe a conservation plan that addresses these pressures and explains how its success could be checked.

Written response

1 point

During fishing, organisms that were not the intended targets are also caught and harmed. What is this unintended catch called?

Written response

1 point

A group of animals leaves the area where its population lives. Which population-change factor does this represent?

Choose one

1 point

A fish population is being harvested faster than it can replace individuals. Which management action most directly addresses the cause of its decline?

A
Increase harvesting during the breeding season.
B
Move the harvest to a different part of the same population's range.
C
Limit harvesting so removals do not exceed population replenishment.
D
Add fertilizer to nearby water to increase algal growth.

Choose one

1 point

A species introduced beyond its natural range establishes in a new area and competes with native species. Which description best fits it?

A
A native species that moves between feeding and breeding areas.
B
A species introduced beyond its natural range that harms native species through competition.
C
A species whose population grows only through immigration.
D
A species that is harvested at a rate its population can replace.

Choose one

1 point

After fertilizer runoff adds excess nutrients to a lake, which sequence best explains how aquatic life may be harmed?

A
Fertilizer runoff reduces nutrients, stopping decomposition and increasing oxygen.
B
Fertilizer runoff directly removes algae, which increases dissolved oxygen.
C
Fertilizer runoff increases soil stability, preventing oxygen from entering the water.
D
Fertilizer runoff encourages algal growth; decomposition of the algae can deplete dissolved oxygen.

Choose one

1 point

A road has divided a large habitat into isolated patches. Which conservation action most directly helps address the resulting restriction on organism movement?

A
Connect habitat patches so organisms can move between them.
B
Increase development between patches to separate them further.
C
Remove vegetation from the remaining habitat patches.
D
Harvest organisms from the smallest patch more rapidly.