Environmental Studies ยท Biology

Biodiversity and Conservation

2,388 Questions

Biodiversity and conservation questions address threats to ecosystems, climate change impacts, and habitat loss. These topics are essential for environmental science sections in major competitive exams. Practicing these questions clarifies concepts regarding species extinction and ecological management.

Habitat loss consequencesClimate change impactsEcosystem degradation causesDesert biodiversity threatsForest diversity threatsResource extraction effects

Biodiversity and Conservation Questions

Multiple choice

Which of the following is NOT a potential consequence of invasive species on native ecosystems?

  1. Competition for resources

  2. Predation and herbivory

  3. Hybridization and genetic pollution

  4. Enhancement of ecosystem stability
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Invasive species typically have negative impacts on native ecosystems, such as competition for resources, predation, and hybridization, but they do not generally enhance ecosystem stability.

Multiple choice

Which of the following is NOT a potential economic impact of invasive species?

  1. Reduced agricultural yields

  2. Increased tourism revenue

  3. Damage to infrastructure and property

  4. Loss of biodiversity and ecosystem services
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

While invasive species can have negative economic impacts, such as reduced agricultural yields and damage to infrastructure, they do not typically increase tourism revenue.

Multiple choice

How did the reintroduction of wolves impact the Yellowstone ecosystem?

  1. Increased Biodiversity

  2. Reduced Erosion

  3. Improved Water Quality

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The reintroduction of wolves in Yellowstone National Park had a profound impact on the ecosystem. It led to increased biodiversity as wolves preyed on elk, allowing other species to thrive. The reduction in elk grazing also helped restore vegetation, which reduced erosion and improved water quality, demonstrating the interconnectedness of ecosystems.

Multiple choice

What innovative technique was used to save the critically endangered Black-footed Ferret?

  1. Cloning

  2. Captive Breeding

  3. Genetic Rescue

  4. Disease Control
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Black-footed Ferret faced near extinction due to disease and habitat loss. Scientists employed genetic rescue techniques, introducing genetic diversity from a closely related species to increase the resilience of the remaining population. This innovative approach helped save the Black-footed Ferret from the brink of extinction.

Multiple choice

What are the main threats to the subarctic?

  1. Climate change

  2. Pollution

  3. Deforestation

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The main threats to the subarctic are climate change, pollution, and deforestation. Climate change is causing the subarctic to warm, which is leading to changes in vegetation and the release of greenhouse gases. Pollution is also a problem in the subarctic, as it can contaminate the air, water, and soil. Deforestation is also a threat to the subarctic, as it can lead to the loss of habitat for wildlife.

Multiple choice

What are the potential consequences of pollution in forest ecosystems?

  1. Damage to aquatic ecosystems

  2. Loss of biodiversity

  3. Impaired human health

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pollution in forest ecosystems can have a range of negative consequences, including damage to aquatic ecosystems, loss of biodiversity, and impaired human health.

Multiple choice

What is the primary impact of mining on species diversity?

  1. Habitat destruction

  2. Pollution

  3. Climate change

  4. Overexploitation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mining activities often involve the removal of large areas of natural habitat, which can lead to the loss of plant and animal species that rely on that habitat for survival.

Multiple choice

What is the term used to describe the decline in biodiversity?

  1. Extinction.

  2. Habitat loss.

  3. Pollution.

  4. Climate change.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Extinction refers to the disappearance of a species from the Earth. It is the ultimate consequence of biodiversity loss and can have far-reaching impacts on ecosystems and human well-being.

Multiple choice

Which human activity is the leading cause of biodiversity loss?

  1. Habitat destruction.

  2. Pollution.

  3. Climate change.

  4. Overexploitation of resources.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat destruction, primarily driven by human activities such as deforestation, urbanization, and agriculture, is the leading cause of biodiversity loss. It fragments and degrades natural habitats, making them unsuitable for many species.

Multiple choice

Which of the following is NOT a regulating service provided by wetlands?

  1. Water filtration

  2. Flood control

  3. Carbon sequestration

  4. Erosion control
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon sequestration is not a regulating service provided by wetlands. Wetlands primarily provide services related to water quality and quantity management, such as water filtration, flood control, and erosion control.

Multiple choice

Which human activity poses the most significant threat to salt marshes?

  1. Climate change

  2. Pollution

  3. Overfishing

  4. Habitat destruction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Habitat destruction, primarily due to coastal development and land reclamation, is the leading threat to salt marshes.

Multiple choice

Which of the following factors is NOT considered a major driver of species diversity?

  1. Climate

  2. Habitat heterogeneity

  3. Competition

  4. Human activities
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

While competition can influence the abundance and distribution of species within a community, it is not a primary driver of species diversity at the regional or global scale.

Multiple choice

Which of the following is NOT a consequence of high species diversity in an ecosystem?

  1. Increased stability and resilience

  2. Enhanced ecosystem functioning

  3. Reduced risk of disease outbreaks

  4. Increased competition for resources
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While high species diversity can lead to increased stability and resilience, it does not necessarily result in reduced competition for resources. In fact, diverse communities often exhibit intense competition for limited resources.

Multiple choice

Which of the following is NOT a major threat to species diversity?

  1. Habitat destruction

  2. Climate change

  3. Pollution

  4. Competition
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While competition can influence the abundance and distribution of species, it is not a direct threat to species diversity at the global scale.

Multiple choice

Which of the following is NOT a benefit of high species diversity in an ecosystem?

  1. Increased stability and resilience

  2. Enhanced ecosystem functioning

  3. Reduced risk of disease outbreaks

  4. Increased vulnerability to invasive species
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While high species diversity can provide various benefits, it does not necessarily reduce the vulnerability of an ecosystem to invasive species.