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

How does land use change in coastal areas affect marine ecosystems?

  1. Increased pollution

  2. Habitat loss and fragmentation

  3. Overfishing

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

Land use change in coastal areas can lead to increased pollution from sewage and industrial waste, habitat loss and fragmentation due to development and infrastructure, and overfishing due to increased demand for seafood.

Multiple choice

How does land use change affect biodiversity?

  1. Habitat loss and fragmentation

  2. Reduced genetic diversity

  3. Increased invasive species

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

Land use change can lead to habitat loss and fragmentation, which reduces the size and connectivity of natural habitats, making them less suitable for wildlife. It can also lead to reduced genetic diversity as populations become isolated and less able to exchange genes. Additionally, land use change can facilitate the spread of invasive species, which can outcompete native species and disrupt ecosystems.

Multiple choice

Which of these is a primary cause of habitat loss, threatening biodiversity worldwide?

  1. Climate Change

  2. Deforestation

  3. Pollution

  4. Overpopulation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deforestation, the clearing of forests for various purposes, is a major contributor to habitat loss and the decline of biodiversity.

Multiple choice

Which of the following is NOT a potential consequence of land use changes on ecosystems?

  1. Habitat loss for wildlife

  2. Increased biodiversity

  3. Disruption of ecosystem services

  4. Reduced water pollution
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Land use changes can lead to habitat loss for wildlife, disruption of ecosystem services, and reduced water pollution. However, they do not typically lead to increased biodiversity.

Multiple choice

Which of the following is NOT a potential impact of climate change on ecosystems?

  1. Habitat loss for wildlife

  2. Increased biodiversity

  3. Disruption of ecosystem services

  4. Reduced water pollution
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Climate change can lead to habitat loss for wildlife, disruption of ecosystem services, and reduced water pollution. However, it does not typically lead to increased biodiversity.

Multiple choice

How does air pollution impact the biodiversity of agricultural ecosystems?

  1. Enhances species diversity and richness

  2. Reduces habitat fragmentation and isolation

  3. Promotes beneficial insect populations

  4. Increases soil microbial activity
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Air pollution can contribute to habitat fragmentation and isolation, disrupting ecological interactions and reducing biodiversity in agricultural landscapes.

Multiple choice

How does industrialization impact biodiversity?

  1. Enhances Species Diversity

  2. Preserves Natural Habitats

  3. Reduces Habitat Fragmentation

  4. Threatens Ecosystems and Species
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Industrialization often leads to habitat destruction, pollution, and resource depletion, threatening ecosystems and causing species decline and extinction.

Multiple choice

Which of the following is NOT a major cause of habitat loss in India?

  1. Deforestation

  2. Urbanization

  3. Mining

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

Natural disasters, such as floods, earthquakes, and landslides, can cause habitat loss, but they are not considered a major cause compared to human activities like deforestation, urbanization, and mining.

Multiple choice

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

  1. Overfishing

  2. Bycatch

  3. Coral Bleaching

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

Oil spills are not considered a major threat to marine biodiversity in India compared to overfishing, bycatch, and coral bleaching. While oil spills can cause localized damage to marine ecosystems, they are not as widespread or persistent as the other threats mentioned.

Multiple choice

What is the term used to describe the loss of biodiversity due to the introduction of non-native species?

  1. Invasive Species

  2. Habitat Fragmentation

  3. Genetic Erosion

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

Invasive species are non-native species that have been introduced to an area and have become a threat to native biodiversity. They can compete with native species for resources, transmit diseases, or alter ecosystems, leading to a decline in biodiversity.

Multiple choice

Which of the following is NOT a major threat to biodiversity in the Sundarbans?

  1. Habitat Loss

  2. Climate Change

  3. Pollution

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

Overgrazing is not a major threat to biodiversity in the Sundarbans. The primary threats to biodiversity in this region include habitat loss due to coastal development and agriculture, climate change-induced sea-level rise and increased frequency of cyclones, and pollution from industrial and agricultural activities.

Multiple choice

What is the term used to describe the loss of genetic diversity within a population?

  1. Genetic Erosion

  2. Habitat Fragmentation

  3. Invasive Species

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

Genetic erosion refers to the loss of genetic diversity within a population. This can occur due to factors such as habitat loss, fragmentation, overexploitation, and inbreeding. Genetic erosion reduces the ability of a population to adapt to environmental changes and increases its susceptibility to diseases and pests.

Multiple choice

Which of the following is NOT a major threat to biodiversity in the Eastern Himalayas?

  1. Deforestation

  2. Climate Change

  3. Mining

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

Overgrazing is not a major threat to biodiversity in the Eastern Himalayas. The primary threats to biodiversity in this region include deforestation for agriculture and logging, climate change-induced changes in temperature and precipitation patterns, and mining activities.

Multiple choice

Which of the following is NOT a major threat to biodiversity in the Andaman and Nicobar Islands?

  1. Habitat Loss

  2. Climate Change

  3. Invasive Species

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

Overfishing is not a major threat to biodiversity in the Andaman and Nicobar Islands. The primary threats to biodiversity in this region include habitat loss due to deforestation and coastal development, climate change-induced sea-level rise and increased frequency of cyclones, and the introduction of invasive alien species.

Multiple choice

Which of the following is a potential consequence of the decline of linguistic diversity?

  1. Loss of cultural heritage

  2. Loss of biodiversity

  3. Loss of economic opportunities

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

The decline of linguistic diversity can lead to the loss of cultural heritage, biodiversity, and economic opportunities, as indigenous languages often hold valuable knowledge and practices related to these aspects.