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

What is the term used to describe a species that has disappeared from the Earth?

  1. Extinct

  2. Endangered

  3. Vulnerable

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

Extinct refers to a species that no longer exists on Earth.

Multiple choice

Which of the following is NOT a major threat to marine biodiversity?

  1. Overfishing

  2. Pollution

  3. Climate change

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

Deforestation is not a major threat to marine biodiversity.

Multiple choice

What is the primary threat to coral reefs posed by overfishing?

  1. Direct damage to coral colonies

  2. Removal of herbivorous fish

  3. Increased nutrient levels

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

Overfishing can directly damage coral colonies, remove herbivorous fish that control algal growth, and increase nutrient levels, all of which contribute to coral reef degradation.

Multiple choice

What is the primary cause of ocean acidification, a major threat to coral reefs?

  1. Increased water temperature

  2. Overfishing

  3. Pollution

  4. Carbon dioxide absorption
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ocean acidification is primarily caused by the absorption of carbon dioxide from the atmosphere, leading to a decrease in ocean pH and posing a significant threat to coral reefs.

Multiple choice

What is the primary reason for the decline of wetland-dependent wildlife species?

  1. Habitat loss and degradation

  2. Pollution

  3. Climate change

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

Habitat loss and degradation, primarily due to human activities such as wetland drainage and conversion for other land uses, is the leading cause of decline for wetland-dependent wildlife species.

Multiple choice

Which of the following is NOT a direct impact of biodiversity loss on water security?

  1. Reduced water availability

  2. Increased water pollution

  3. Loss of aquatic biodiversity

  4. Improved water quality
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biodiversity loss can lead to reduced water availability, increased water pollution, and loss of aquatic biodiversity, but it does not directly improve water quality.

Multiple choice

What are some of the key threats to biodiversity that can have negative impacts on water security?

  1. Habitat loss and fragmentation

  2. Pollution

  3. Climate change

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

Habitat loss and fragmentation, pollution, and climate change are all key threats to biodiversity that can have negative impacts on water security. Habitat loss and fragmentation can lead to the loss of aquatic ecosystems and the species that depend on them, pollution can contaminate water sources and make them unsafe for human use, and climate change can alter water cycles and lead to changes in water availability and quality.

Multiple choice

Which of the following is a major cause of biodiversity loss?

  1. Habitat destruction

  2. Climate change

  3. Pollution

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

Habitat destruction, particularly deforestation, is a major cause of biodiversity loss.

Multiple choice

How does ozone depletion affect marine ecosystems?

  1. It can harm phytoplankton, the base of the marine food web

  2. It can lead to coral bleaching and reef damage

  3. It can disrupt the life cycles of marine animals

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

Ozone depletion can harm phytoplankton, the base of the marine food web, lead to coral bleaching and reef damage, and disrupt the life cycles of marine animals.

Multiple choice

What is the main threat to Biosphere Reserves worldwide?

  1. Climate change

  2. Habitat loss and fragmentation

  3. Pollution

  4. Invasive species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Habitat loss and fragmentation due to human activities such as deforestation, agriculture, and urbanization are the main threats to Biosphere Reserves worldwide.

Multiple choice

How does urbanization contribute to biodiversity loss?

  1. Habitat destruction

  2. Pollution

  3. Climate change

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

Urbanization contributes to biodiversity loss through habitat destruction, pollution, climate change, and other factors.

Multiple choice

What are some of the consequences of biodiversity loss in urban areas?

  1. Reduced air and water quality

  2. Increased flooding and heat waves

  3. Loss of ecosystem services

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

Biodiversity loss in urban areas can have a range of negative consequences, including reduced air and water quality, increased flooding and heat waves, and the loss of ecosystem services.

Multiple choice

What are some of the threats faced by mangrove forests?

  1. Deforestation

  2. Climate change

  3. Pollution

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

Mangrove forests face threats from deforestation, climate change, and pollution.

Multiple choice

What are some threats to wetlands?

  1. Pollution

  2. Climate change

  3. Land development

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

Wetlands are threatened by a variety of factors, including pollution, climate change, and land development.

Multiple choice

What is the future of wetlands?

  1. Wetlands are facing a number of threats, including pollution, climate change, and land development.

  2. Wetlands are being protected and restored in many parts of the world.

  3. The future of wetlands is uncertain.

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

Wetlands are facing a number of threats, but they are also being protected and restored in many parts of the world. The future of wetlands is uncertain, but there is hope that they can be preserved and restored for future generations.