A fish population is being caught faster than it can recover. This is an example of direct exploitation.
3 Biodiversity and Conservation Online Quiz Questions
Use this free practice quiz with 20 questions to review 3 Biodiversity and Conservation, test your knowledge, and prepare for your next test or exam.
Which ecosystem service category includes recreational, spiritual, educational, and aesthetic benefits?
What term describes organisms introduced beyond their natural range that can spread and harm native species or ecosystems?
Nutrient cycling and soil formation are examples of ecosystem services.
A wetland filters some pollutants from water. Which ecosystem service category best describes this benefit?
- A
Cultural
- B
Regulating
- C
Provisioning
- D
Supporting
Two communities have the same number of species, but one is dominated by a single species while the other has more even population sizes. Which community has greater species diversity?
- A
The community with one dominant species, because dominance always increases diversity
- B
The community with more even population sizes, because individuals are distributed more evenly among species
- C
Both communities must have equal species diversity because they have the same species richness
- D
Neither community has species diversity unless every species has exactly the same population size
Biodiversity guarantees that an ecosystem will resist every disturbance or environmental change.
- A
True
- B
False
Restoring and connecting habitats can help populations persist, , and recover.
A threatened plant population needs additional recovery support. Which approach is identified as a possible conservation measure?
- A
Draining nearby wetlands to reduce competition
- B
Increasing harvest before the population declines further
- C
Carefully managed seed storage to support future recovery
- D
Introducing organisms from outside the species' natural range
Select all the underlying causes of pressures on biodiversity identified in the material.
- A
Patterns of production and consumption
- B
Pollution
- C
Economic incentives
- D
Habitat fragmentation
- E
Technology
- F
Invasive alien species
- G
Governance
A community wants to continue harvesting a natural resource while allowing populations and ecosystems to persist. Which approach best reflects sustainable use?
- A
Harvest as much as possible while the resource remains available
- B
Stop all resource use regardless of ecological or community context
- C
Keep harvest and land use within ecological limits
- D
Replace habitat protections with increased harvesting
A conservation plan will affect local resource use. Select all planning steps that are consistent with the material.
- A
Include local and Indigenous communities in decisions affecting them
- B
Base decisions only on ecological evidence and ignore people's needs
- C
Consider both ecological evidence and people's needs
- D
Assess effects on affected people's lands, livelihoods, and resources
- E
Avoid consulting communities so decisions can be made more quickly
A species is declining while the ecosystem processes it depends on are also being disrupted. Which conservation approach best reflects the scope of conservation?
- A
Focus only on increasing the number of individual animals
- B
Restore the affected ecosystem and maintain the processes biodiversity depends on
- C
Remove all human involvement from decisions about land and water
- D
Protect a species while leaving all pressures on its habitat unaddressed
A forest species is declining as forest areas become fragmented and climate conditions shift. Propose a conservation plan that addresses both the species and the broader ecosystem, and explains how the plan should account for people affected by conservation decisions.
A community values a nearby ecosystem because people can enjoy recreational activities there. Which category of ecosystem service does this benefit represent?
- A
Provisioning
- B
Cultural
- C
Regulating
- D
Supporting
Which option is an underlying cause of pressures on biodiversity, rather than one of the five major direct pressures?
- A
Pollution
- B
Climate change
- C
Economic incentives
- D
Direct exploitation
Two communities each contain eight species. In one, a single species makes up most individuals; in the other, individuals are distributed more evenly among all eight species. Which community has greater species diversity?
- A
The first community, because having one especially common species increases diversity
- B
The second community, because its individuals are distributed more evenly among species
- C
Neither community, because equal species richness always means equal species diversity
- D
Neither community, because diversity depends only on the total number of individuals
True or false: An ecosystem with high biodiversity is guaranteed to resist every disturbance or environmental change.
- A
True
- B
False
Nutrient cycling and soil formation help ecosystems function and sustain other services. What category of ecosystem service includes these processes?
A fish population is harvested faster than it can recover. What major direct pressure on biodiversity does this illustrate?