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 biodiversity?

  1. Habitat loss and fragmentation.

  2. Overexploitation of natural resources.

  3. Pollution and contamination.

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

While climate change is a significant environmental issue, it is not directly considered a threat to biodiversity in the same way as habitat loss, overexploitation, and pollution.

Multiple choice

What is the concept of the 'tragedy of the commons' in environmental studies?

  1. The overuse of shared resources due to individual self-interest.

  2. The depletion of natural resources due to unregulated exploitation.

  3. The conflict between economic development and environmental conservation.

  4. The negative consequences of pollution on human health.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The 'tragedy of the commons' refers to the situation where individuals acting in their own self-interest overuse shared resources, leading to their depletion or degradation.

Multiple choice

Which of the following is NOT considered a planetary boundary?

  1. Climate change

  2. Biodiversity loss

  3. Ocean acidification

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

The planetary boundaries are a set of nine environmental limits that, if crossed, could lead to irreversible and catastrophic damage to the Earth's ecosystems. Economic growth is not considered a planetary boundary because it is not a direct threat to the environment.

Multiple choice

Which of the following is the leading cause of biodiversity loss?

  1. Habitat loss and fragmentation

  2. Climate change

  3. Pollution

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

Habitat loss and fragmentation is the leading cause of biodiversity loss, as it destroys and degrades the natural habitats of species, making it difficult for them to survive and reproduce.

Multiple choice

Which of the following is NOT a benefit of biodiversity?

  1. Provides food and water

  2. Regulates climate

  3. Provides medicines

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

Biodiversity provides many benefits to humans, including food, water, medicines, and climate regulation. It does not, however, increase pollution.

Multiple choice

Which of the following is NOT a planetary boundary related to biodiversity?

  1. Climate change

  2. Nitrogen and phosphorus pollution

  3. Land-system change

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

Ocean acidification is not a planetary boundary related to biodiversity, as it is primarily caused by the absorption of carbon dioxide from the atmosphere by the oceans.

Multiple choice

Which of the following is NOT a consequence of biodiversity loss?

  1. Loss of ecosystem services

  2. Increased vulnerability to climate change

  3. Improved human health

  4. Reduced food security
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biodiversity loss can have many negative consequences, including the loss of ecosystem services, increased vulnerability to climate change, and reduced food security. However, it does not lead to improved human health.

Multiple choice

Which of the following is NOT a major cause of extinction?

  1. Habitat loss

  2. Climate change

  3. Overpopulation

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

Natural selection is a process that leads to the adaptation of a species to its environment, not its extinction.

Multiple choice

Which of the following is NOT a consequence of extinction?

  1. Loss of biodiversity

  2. Disruption of ecosystem services

  3. Increased resilience to environmental change

  4. Loss of genetic diversity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Extinction leads to a decrease in biodiversity, disruption of ecosystem services, and loss of genetic diversity, not an increase in resilience to environmental change.

Multiple choice

The term 'background extinction rate' refers to:

  1. The average rate of extinction over a long period of time

  2. The rate of extinction caused by human activities

  3. The rate of extinction caused by natural disasters

  4. The rate of extinction caused by climate change
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The background extinction rate is the average rate of extinction that has occurred over a long period of time, typically millions of years.

Multiple choice

The extinction of a keystone species can have a cascading effect on an ecosystem, leading to:

  1. Population declines in other species

  2. Changes in ecosystem structure and function

  3. Loss of biodiversity

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

The extinction of a keystone species can have a cascading effect on an ecosystem, leading to population declines in other species, changes in ecosystem structure and function, and loss of biodiversity.

Multiple choice

Which of the following is NOT a type of extinction?

  1. Mass extinction

  2. Background extinction

  3. Endemic extinction

  4. Local extinction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Endemic extinction is not a type of extinction. It refers to the extinction of a species that is restricted to a particular geographic area.

Multiple choice

Which of the following is NOT a factor that contributes to the vulnerability of a species to extinction?

  1. Small population size

  2. Restricted geographic range

  3. Specialized diet

  4. High reproductive rate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A high reproductive rate can help a species recover from population declines, making it less vulnerable to extinction.

Multiple choice

How can recreational activities impact biodiversity?

  1. Habitat destruction

  2. Pollution

  3. Invasive species introduction

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

Recreational activities can impact biodiversity through habitat destruction, pollution, and the introduction of invasive species.

Multiple choice

Which method is commonly used to assess the impact of habitat changes on wildlife populations?

  1. Before-after-control-impact (BACI) design

  2. Habitat suitability modeling

  3. Landscape ecology analysis

  4. Population viability analysis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The BACI design is a widely used experimental approach in ecology to assess the impact of habitat changes by comparing data collected before and after the change in both impacted and control sites.