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 for the movement of species to new areas in response to climate change?

  1. Migration

  2. Adaptation

  3. Evolution

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

Migration is the movement of species from one area to another in response to changes in environmental conditions, such as climate change.

Multiple choice

Which of the following ecosystems is most likely to be negatively affected by climate change?

  1. Coral reefs

  2. Rainforests

  3. Deserts

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

Coral reefs are very sensitive to changes in water temperature and acidity. As the ocean warms and becomes more acidic due to climate change, coral reefs are bleaching and dying.

Multiple choice

Which of the following is an example of a species that is threatened by climate change?

  1. Polar bears

  2. Coral reefs

  3. Monarch butterflies

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

Polar bears rely on sea ice for hunting and breeding, but climate change is causing the sea ice to melt. Coral reefs are sensitive to changes in water temperature and acidity, both of which are being affected by climate change. Monarch butterflies are dependent on milkweed plants, which are being affected by climate change.

Multiple choice

What is the term for the movement of species to new areas in response to climate change?

  1. Migration

  2. Adaptation

  3. Extinction

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

Migration is the movement of species from one area to another in response to environmental changes, such as climate change.

Multiple choice

What are some of the consequences of ocean acidification for marine life other than coral reefs?

  1. It can harm shellfish and other marine organisms with calcium carbonate shells.

  2. It can disrupt the food chain.

  3. It can lead to the loss of biodiversity.

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

Ocean acidification can harm shellfish and other marine organisms with calcium carbonate shells, disrupt the food chain, and lead to the loss of biodiversity.

Multiple choice

Which human activity poses the greatest threat to coral reefs?

  1. Climate change and ocean acidification.

  2. Overfishing and destructive fishing practices.

  3. Pollution from land-based sources.

  4. Tourism and recreational activities.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Climate change and ocean acidification, caused by increased carbon dioxide levels, are the primary threats to coral reefs, leading to coral bleaching and reduced reef resilience.

Multiple choice

What is the primary cause of coral bleaching?

  1. Overfishing

  2. Pollution

  3. Climate change

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

Climate change, particularly rising ocean temperatures, is the primary cause of coral bleaching.

Multiple choice

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

  1. Overfishing

  2. Climate change

  3. Habitat destruction

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

Asteroid impacts are not a direct threat to marine biodiversity, although they can have indirect effects.

Multiple choice

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

  1. Enhanced ecosystem productivity

  2. Reduced susceptibility to environmental disturbances

  3. Increased competition for resources

  4. Diminished nutrient cycling
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Increased species diversity generally leads to enhanced nutrient cycling due to the presence of a wider range of organisms with diverse nutrient acquisition strategies.

Multiple choice

Which of the following factors is NOT considered a driver of species diversity in an ecosystem?

  1. Habitat heterogeneity

  2. Climate stability

  3. Human-induced disturbances

  4. Interspecies competition
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Human activities, such as habitat destruction, pollution, and climate change, are often viewed as threats to biodiversity rather than drivers of species diversity.

Multiple choice

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

  1. Increased susceptibility to invasive species

  2. Diminished ecosystem productivity

  3. Enhanced nutrient cycling

  4. Reduced resilience to environmental changes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Reduced species diversity can lead to a decrease in nutrient cycling efficiency due to the loss of organisms with specialized nutrient acquisition strategies.

Multiple choice

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

  1. Enhanced ecosystem stability

  2. Reduced susceptibility to invasive species

  3. Increased vulnerability to environmental disturbances

  4. Enhanced nutrient cycling
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Increased species diversity generally leads to enhanced ecosystem stability and resilience, making the ecosystem less susceptible to environmental disturbances.

Multiple choice

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

  1. Enhanced ecosystem resilience

  2. Increased resistance to invasive species

  3. Diminished nutrient cycling

  4. Improved ecosystem productivity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

High species diversity generally leads to enhanced nutrient cycling efficiency due to the presence of a wider range of organisms with diverse nutrient acquisition strategies.

Multiple choice

The term 'biodiversity hotspot' refers to:

  1. A region with exceptionally high levels of species diversity

  2. An area that has been designated for conservation due to its unique biodiversity

  3. A region that is particularly vulnerable to the effects of climate change

  4. A region that is home to a large number of endangered species
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity hotspots are regions that harbor an exceptionally high number of species, often including a significant proportion of endemic species, and are recognized for their global conservation significance.

Multiple choice

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

  1. Increased susceptibility to invasive species

  2. Diminished ecosystem productivity

  3. Enhanced nutrient cycling

  4. Reduced resilience to environmental changes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Reduced species diversity can lead to a decrease in nutrient cycling efficiency due to the loss of organisms with specialized nutrient acquisition strategies.