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 main cause of endangerment for most species in India?

  1. Habitat loss

  2. Hunting

  3. Pollution

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

Habitat loss is the main cause of endangerment for most species in India. This is due to deforestation, urbanization, and other human activities that destroy or fragment natural habitats.

Multiple choice

What are some of the challenges facing conservation efforts in India?

  1. Habitat loss

  2. Poaching

  3. Climate change

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

All of the above are challenges facing conservation efforts in India.

Multiple choice

Which of these factors is not a major threat to coral reefs?

  1. Climate change

  2. Overfishing

  3. Pollution

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

While natural disasters can cause localized damage to coral reefs, they are not a primary driver of long-term reef degradation. Climate change, overfishing, and pollution pose significant threats to the health and survival of coral reefs worldwide.

Multiple choice

Which of these factors is not a contributing factor to coral bleaching?

  1. Elevated sea temperatures

  2. Pollution

  3. Overfishing

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

Natural aging is not a contributing factor to coral bleaching. Coral bleaching occurs when corals expel the symbiotic algae that provide them with nutrients and color, resulting in a loss of pigmentation and increased susceptibility to stress and disease.

Multiple choice

What is the term used to describe the loss of biodiversity in agricultural ecosystems?

  1. Agrobiodiversity Loss

  2. Habitat Fragmentation

  3. Ecosystem Simplification

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

Agrobiodiversity loss refers to the decline in the variety of plant and animal species in agricultural ecosystems, often due to the intensification of farming practices.

Multiple choice

What is the primary cause of overfishing in marine ecosystems?

  1. Climate Change

  2. Habitat Destruction

  3. Bycatch

  4. Unsustainable Fishing Practices
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Unsustainable fishing practices, such as overfishing and destructive fishing methods, are the primary cause of the decline in fish populations and marine biodiversity.

Multiple choice

What are some of the consequences of cultural extinction?

  1. Loss of biodiversity

  2. Loss of traditional knowledge and skills

  3. Loss of cultural identity

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

Cultural extinction can lead to the loss of biodiversity, traditional knowledge and skills, cultural identity, and other negative consequences.

Multiple choice

Which of the following is a major threat to the resilience of tundra ecosystems?

  1. Climate change

  2. Pollution

  3. Habitat fragmentation

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

Climate change, particularly the rise in temperatures, is a significant threat to tundra ecosystems. It leads to the thawing of permafrost, disruption of hydrological processes, and changes in vegetation composition, impacting the overall resilience of these fragile environments.

Multiple choice

What is the primary reason for the low biodiversity in tundra ecosystems?

  1. Harsh climatic conditions

  2. Limited resources

  3. Competition from other species

  4. Lack of suitable habitats
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The harsh climatic conditions in tundra environments, characterized by extreme temperatures, short growing seasons, and low precipitation, limit the survival and diversity of many species. These conditions make it challenging for organisms to adapt and thrive, resulting in lower biodiversity compared to other ecosystems.

Multiple choice

Which of the following is a potential consequence of the loss of resilience in tundra ecosystems?

  1. Increased risk of wildfires

  2. Release of greenhouse gases

  3. Disruption of migratory patterns

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

The loss of resilience in tundra ecosystems can have several potential consequences. It can increase the risk of wildfires as the drying of peatlands and the accumulation of dead plant material create favorable conditions for fires. The loss of permafrost can also lead to the release of greenhouse gases, further contributing to climate change. Additionally, the disruption of migratory patterns of tundra species, such as caribou and birds, can have negative impacts on ecosystems and communities that rely on these species for sustenance and cultural practices.

Multiple choice

Which of the following is a direct consequence of rising ocean temperatures for marine mammals?

  1. Increased risk of disease

  2. Reduced availability of prey

  3. Habitat loss

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

Rising ocean temperatures can lead to increased risk of disease, reduced availability of prey due to changes in marine ecosystems, and habitat loss for marine mammals.

Multiple choice

What is the primary cause of habitat loss for marine mammals due to climate change?

  1. Rising sea levels

  2. Melting sea ice

  3. Ocean acidification

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

Melting sea ice is a major cause of habitat loss for marine mammals, particularly in polar regions, as it reduces their hunting grounds, breeding areas, and resting platforms.

Multiple choice

Which of the following human activities exacerbates the impacts of climate change on marine mammals?

  1. Overfishing

  2. Pollution

  3. Habitat destruction

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

Overfishing, pollution, and habitat destruction are human activities that contribute to the negative impacts of climate change on marine mammals by reducing their food sources, contaminating their habitats, and disrupting their natural behaviors.

Multiple choice

What is the long-term outlook for marine mammals in the face of climate change?

  1. Uncertain and dependent on conservation efforts

  2. Bleak due to irreversible habitat loss

  3. Positive due to increasing public awareness

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The long-term outlook for marine mammals in the face of climate change is uncertain and depends on the effectiveness of conservation efforts, as well as global efforts to mitigate climate change.

Multiple choice

Which of the following is NOT a consequence of coral bleaching due to rising ocean temperatures?

  1. Loss of coral reefs.

  2. Increased biodiversity.

  3. Reduced fish populations.

  4. Harm to marine ecosystems.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Coral bleaching, caused by rising ocean temperatures, leads to the loss of coral reefs, reduced fish populations, and harm to marine ecosystems. It does not result in increased biodiversity.