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

What is the primary reason behind the low biodiversity in tundra regions?

  1. Abundant food resources

  2. Mild climate conditions

  3. Diverse habitats

  4. Harsh environmental conditions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The extreme cold, short growing season, and limited resources contribute to the low biodiversity in tundra regions.

Multiple choice

What is the primary reason for the decline in biodiversity in Indian rivers and lakes?

  1. Pollution

  2. Deforestation

  3. Climate Change

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

Pollution, primarily from industrial and agricultural sources, is the leading cause of biodiversity decline in Indian rivers and lakes.

Multiple choice

Which of the following is NOT a key threat to biodiversity in Indian rivers and lakes?

  1. Habitat destruction

  2. Invasive species

  3. Overgrazing

  4. Water pollution
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overgrazing is not a significant threat to biodiversity in Indian rivers and lakes.

Multiple choice

What is the main 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 is the main cause of biodiversity loss, as it removes the natural habitats of plants and animals, making it difficult for them to survive.

Multiple choice

Which of the following is NOT a potential consequence of sea level rise?

  1. Increased flooding and erosion

  2. Salinization of coastal freshwater sources

  3. Loss of coastal habitats and biodiversity

  4. Increased tourism and economic development
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sea level rise is generally associated with negative consequences such as flooding, erosion, and habitat loss. Increased tourism and economic development are not direct consequences of sea level rise.

Multiple choice

Which of the following is NOT a potential consequence of sea level rise for coastal ecosystems?

  1. Loss of coastal habitats and biodiversity

  2. Increased flooding and salinization of wetlands

  3. Enhanced coastal productivity and fisheries

  4. Migration of coastal species to higher elevations
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Enhanced coastal productivity and fisheries are not potential consequences of sea level rise for coastal ecosystems, as rising sea levels typically lead to habitat loss and disruption of marine ecosystems.

Multiple choice

Which of the following is NOT a major impact of marine pollution on marine life?

  1. Habitat destruction

  2. Reduced biodiversity

  3. Increased disease

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

Improved growth is not a major impact of marine pollution on marine life. Habitat destruction, Reduced biodiversity, and Increased disease are all major impacts of marine pollution on marine life.

Multiple choice

What is the main cause of habitat destruction in marine ecosystems?

  1. Coral bleaching

  2. Overfishing

  3. Coastal development

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

Coastal development is the main cause of habitat destruction in marine ecosystems, accounting for about 50% of the total habitat destruction in marine ecosystems worldwide.

Multiple choice

What is the primary cause of overexploitation?

  1. Natural disasters

  2. Habitat loss

  3. Human activities

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

Overexploitation is primarily driven by human activities such as excessive hunting, fishing, logging, and resource extraction.

Multiple choice

Which of the following is an example of overexploitation?

  1. Sustainable harvesting of renewable resources

  2. Selective logging to promote forest regeneration

  3. Commercial whaling leading to population decline

  4. Conservation efforts to protect endangered species
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overexploitation involves the excessive extraction of resources, leading to population decline. Commercial whaling is an example of overexploitation that has resulted in the decline of whale populations.

Multiple choice

What is the impact of overexploitation on species?

  1. Increased population growth

  2. Enhanced genetic diversity

  3. Population decline and potential extinction

  4. Improved habitat quality
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overexploitation can lead to population decline and even extinction if the rate of extraction exceeds the species' ability to reproduce and replenish its population.

Multiple choice

How does overexploitation affect ecosystems?

  1. It enhances ecosystem stability

  2. It promotes biodiversity

  3. It disrupts ecological balance and ecosystem services

  4. It improves water quality
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overexploitation can disrupt ecological balance by reducing the abundance of certain species, leading to changes in food webs, nutrient cycling, and ecosystem services.

Multiple choice

What are the consequences of overexploitation for humans?

  1. Increased food security

  2. Enhanced economic growth

  3. Loss of biodiversity and ecosystem services

  4. Improved public health
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overexploitation can lead to the loss of biodiversity, which in turn affects ecosystem services such as pollination, water purification, and climate regulation, ultimately impacting human well-being.

Multiple choice

How does overexploitation contribute to the loss of genetic diversity?

  1. It increases the genetic diversity of populations

  2. It promotes the survival of the fittest individuals

  3. It leads to the extinction of entire species

  4. It enhances the resilience of ecosystems
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Overexploitation can lead to the extinction of entire species, resulting in the loss of unique genetic diversity and the disruption of ecosystem functioning.

Multiple choice

What is the term for the loss of biodiversity caused by deforestation?

  1. Habitat fragmentation

  2. Species extinction

  3. Ecological collapse

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

Deforestation leads to habitat fragmentation, which isolates populations of species and increases their vulnerability to extinction. It also contributes to species extinction directly by destroying their habitats and reducing their food sources. Ultimately, deforestation can lead to ecological collapse, where entire ecosystems are disrupted or destroyed.