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 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.

Multiple choice

Which of the following is NOT a major cause of species overexploitation?

  1. Habitat destruction

  2. Climate change

  3. Pollution

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

Sustainable harvesting is a management strategy aimed at preventing overexploitation, rather than a cause of it.

Multiple choice

What is the term used to describe the loss of species from an ecosystem?

  1. Extinction

  2. Endangerment

  3. Overexploitation

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

Extinction refers to the complete disappearance of a species from the Earth.

Multiple choice

Which of the following is NOT a consequence of species overexploitation?

  1. Loss of biodiversity

  2. Disruption of ecosystem services

  3. Increased resilience to environmental changes

  4. Economic losses
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overexploitation typically reduces biodiversity and ecosystem resilience, rather than increasing it.

Multiple choice

Which of the following is NOT a type of species overexploitation?

  1. Hunting

  2. Fishing

  3. Logging

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

Mining is not typically considered a form of species overexploitation, as it does not directly target living organisms.

Multiple choice

What is the term for the loss of species due to habitat destruction?

  1. Habitat fragmentation

  2. Extinction

  3. Endangerment

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

Defaunation refers specifically to the loss of animal species due to habitat destruction.

Multiple choice

What are the main environmental impacts of agricultural expansion?

  1. Loss of biodiversity

  2. Climate change

  3. Water pollution

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

Agricultural expansion can lead to loss of biodiversity, climate change, and water pollution.

Multiple choice

Which of the following is not a factor that can affect species diversity?

  1. Habitat loss

  2. Climate change

  3. Pollution

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

Competition is not a factor that can affect species diversity, but rather a factor that can affect the relative abundance of species within a community.