Environmental Studies ยท Biology

Biodiversity and Conservation

2,266 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 threat to cultural landscapes?

  1. Climate change

  2. Pollution

  3. Tourism

  4. War

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tourism is not a threat to cultural landscapes, as it can help to raise awareness of and support for these sites.

Multiple choice

What are the threats to wetlands?

  1. Pollution

  2. Climate change

  3. Land use change

  4. All of the above

Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

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

Multiple choice

What is the main cause of coral bleaching?

  1. Climate change

  2. Pollution

  3. Overfishing

  4. Disease

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Coral bleaching is caused by a rise in ocean temperatures. When the water gets too warm, the coral expels the algae that live in its tissues. This causes the coral to turn white and become more susceptible to disease and death.

Multiple choice

What is the main threat to coral reefs in the Caribbean?

  1. Climate change

  2. Pollution

  3. Overfishing

  4. Disease

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overfishing is the main threat to coral reefs in the Caribbean. When fish are removed from the reef, it can disrupt the delicate balance of the ecosystem. This can lead to an increase in algae, which can smother the coral and prevent it from getting sunlight.

Multiple choice

What is the impact of sea ice loss on Arctic wildlife?

  1. It benefits Arctic wildlife

  2. It has no impact on Arctic wildlife

  3. It negatively impacts Arctic wildlife

  4. It improves Arctic wildlife's habitat

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The loss of sea ice due to climate change has severe consequences for Arctic wildlife, including polar bears, seals, walruses, and seabirds, as it disrupts their habitat, hunting grounds, and migration routes.

Multiple choice

How does ocean acidification impact marine life?

  1. Coral Bleaching

  2. Shellfish Weakening

  3. Fish Population Decline

  4. All of the Above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ocean acidification affects marine life in various ways, including coral bleaching, shellfish weakening, and fish population decline.

Multiple choice

What are the long-term effects of coral bleaching?

  1. Loss of biodiversity

  2. Damage to coral reefs

  3. Reduced food security

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coral bleaching can have a number of long-term effects, including loss of biodiversity, damage to coral reefs, and reduced food security. Coral reefs are home to a wide variety of marine life, and when corals die, it can disrupt the entire ecosystem. Coral reefs also provide food and shelter for many fish species, and when they are damaged, it can reduce the amount of food available for these fish.

Multiple choice

What is the impact of human activities on the resilience of desert ecosystems?

  1. Overgrazing can lead to desertification.

  2. Unsustainable water extraction can deplete groundwater resources.

  3. Pollution can contaminate soil and water sources.

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Human activities can negatively impact the resilience of desert ecosystems. Overgrazing can lead to desertification, as vegetation is removed and the soil is exposed to erosion. Unsustainable water extraction can deplete groundwater resources, making water scarce for both humans and wildlife. Pollution from industrial and agricultural activities can contaminate soil and water sources, harming desert organisms.

Multiple choice

The concept of 'tragedy of the commons' is associated with:

  1. The overuse and degradation of common property resources

  2. The failure of private property rights to protect environmental resources

  3. The inability of government regulations to control environmental pollution

  4. The negative impact of economic growth on environmental quality

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The 'tragedy of the commons' refers to the situation where individual incentives to overuse a common resource lead to its depletion or degradation, even if it is collectively beneficial to conserve it.

Multiple choice

How does ocean acidification affect marine ecosystems?

  1. It harms coral reefs and shellfish

  2. It disrupts the food chain

  3. It reduces biodiversity

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ocean acidification harms coral reefs and shellfish, disrupts the food chain, and reduces biodiversity, posing significant threats to marine ecosystems.

Multiple choice

What is the main cause of coral bleaching?

  1. Increased ocean temperatures

  2. Pollution

  3. Overfishing

  4. Habitat destruction

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Coral bleaching is primarily caused by increased ocean temperatures, which stress corals and cause them to expel their symbiotic algae, leading to loss of color and vulnerability to disease.

Multiple choice

What are the primary ecological effects of wildfires?

  1. Loss of biodiversity

  2. Alteration of ecosystem structure and function

  3. Release of greenhouse gases

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Wildfires can have a range of ecological effects, including the loss of biodiversity, alteration of ecosystem structure and function, and release of greenhouse gases. Wildfires can kill plants and animals, destroy habitats, and alter the composition and structure of ecosystems. They can also release large amounts of greenhouse gases into the atmosphere, contributing to climate change.

Multiple choice

What are some challenges facing wildlife education and interpretation in the 21st century?

  1. Climate change.

  2. Habitat loss and fragmentation.

  3. Invasive species.

  4. All of the above.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Climate change, habitat loss and fragmentation, and invasive species are all challenges facing wildlife education and interpretation in the 21st century.

Multiple choice

What is the primary mode of introduction of invasive species?

  1. Natural dispersal

  2. Human activities

  3. Climate change

  4. Habitat destruction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Invasive species are often introduced through human activities such as trade, travel, and agriculture.

Multiple choice

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

  1. Competition for resources

  2. Predation and herbivory

  3. Hybridization with native species

  4. Increased biodiversity

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Invasive species can have a variety of negative impacts on native ecosystems, including competition for resources, predation and herbivory, and hybridization with native species, but they do not typically increase biodiversity.