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 term for the loss of genetic diversity in crops and livestock?

  1. Genetic erosion

  2. Biodiversity loss

  3. Habitat destruction

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

Genetic erosion refers to the loss of genetic diversity in crops and livestock due to factors such as the replacement of traditional varieties with modern hybrids and the loss of natural habitats.

Multiple choice

How does oil pollution affect the ability of marine mammals to hunt and feed?

  1. It reduces their visibility, making it harder to find prey.

  2. It damages their sense of smell, making it harder to locate food.

  3. It coats their fur, reducing their insulation and making them more susceptible to cold.

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

Oil pollution can impair marine mammals' ability to hunt and feed by reducing their visibility, damaging their sense of smell, and coating their fur, leading to reduced insulation and increased susceptibility to cold.

Multiple choice

How does oil pollution impact the food chain in marine ecosystems?

  1. It reduces the availability of food for organisms at higher trophic levels.

  2. It can bioaccumulate and magnify as it moves up the food chain.

  3. It disrupts the balance between predators and prey.

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

Oil pollution can impact the food chain in marine ecosystems by reducing the availability of food for organisms at higher trophic levels, bioaccumulating and magnifying as it moves up the food chain, and disrupting the balance between predators and prey.

Multiple choice

Which of the following is not a potential consequence of oil pollution on marine ecosystems?

  1. Reduced biodiversity

  2. Increased productivity

  3. Habitat destruction

  4. Food chain disruption
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Increased productivity is not a potential consequence of oil pollution on marine ecosystems. Oil pollution typically leads to reduced biodiversity, habitat destruction, and food chain disruption.

Multiple choice

What is the primary cause of habitat loss?

  1. Natural disasters

  2. Climate change

  3. Human activities

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

Human activities such as urbanization, agriculture, mining, and deforestation are the leading causes of habitat loss.

Multiple choice

Which of the following is NOT a direct consequence of habitat loss?

  1. Species extinction

  2. Ecosystem disruption

  3. Increased genetic diversity

  4. Loss of ecosystem services
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Habitat loss typically leads to a decrease in genetic diversity, as populations become isolated and lose genetic connectivity.

Multiple choice

How does habitat loss affect the ability of species to adapt to changing environmental conditions?

  1. It increases their adaptive capacity

  2. It has no effect on their adaptability

  3. It reduces their adaptive capacity

  4. It makes them more resistant to diseases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Habitat loss reduces the genetic diversity of populations, which in turn limits their ability to adapt to changing environmental conditions.

Multiple choice

Which group of organisms is most vulnerable to habitat loss?

  1. Generalist species

  2. Specialist species

  3. Endemic species

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

Specialist species, which have narrow habitat requirements and are adapted to specific environmental conditions, are more vulnerable to habitat loss than generalist species.

Multiple choice

How does habitat loss contribute to the disruption of ecosystem services?

  1. It increases the availability of resources

  2. It enhances the resilience of ecosystems

  3. It reduces the provision of ecosystem services

  4. It promotes biodiversity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Habitat loss disrupts ecosystem services by reducing the abundance and diversity of species that provide these services, such as pollination, water purification, and carbon sequestration.

Multiple choice

Which of the following is NOT a potential consequence of habitat loss for human well-being?

  1. Increased food security

  2. Reduced access to clean water

  3. Loss of traditional livelihoods

  4. Increased vulnerability to natural disasters
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat loss can lead to reduced food security, as it disrupts ecosystems that provide food resources and livelihoods for human populations.

Multiple choice

How does habitat loss contribute to the spread of invasive species?

  1. It creates new habitats for invasive species

  2. It reduces competition from native species

  3. It increases the availability of resources for invasive species

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

Habitat loss can contribute to the spread of invasive species by creating new habitats, reducing competition from native species, and increasing the availability of resources for invasive species.

Multiple choice

Which of the following is NOT a potential consequence of habitat loss for aquatic ecosystems?

  1. Loss of fish biodiversity

  2. Disruption of coral reef ecosystems

  3. Increased water pollution

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

Habitat loss in aquatic ecosystems can lead to decreased water quality, as it disrupts the natural processes that filter and purify water.

Multiple choice

How does habitat loss affect the ability of ecosystems to provide resilience to environmental disturbances?

  1. It increases the resilience of ecosystems

  2. It has no effect on ecosystem resilience

  3. It reduces the resilience of ecosystems

  4. It makes ecosystems more vulnerable to diseases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Habitat loss reduces the biodiversity and complexity of ecosystems, which in turn reduces their ability to withstand and recover from environmental disturbances.

Multiple choice

What are some threats to biodiversity?

  1. Habitat loss

  2. Pollution

  3. Climate change

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

Biodiversity is threatened by a number of factors, including habitat loss, pollution, climate change, and invasive species. Habitat loss is the leading cause of biodiversity loss, as it destroys the natural habitats of plants and animals.

Multiple choice

Which of the following is not a threat to biodiversity?

  1. Habitat loss

  2. Pollution

  3. Climate change

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

Overpopulation is not a direct threat to biodiversity, although it can contribute to habitat loss and pollution, which are threats to biodiversity.