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 primary threat to endangered species?

  1. Habitat loss and fragmentation

  2. Overexploitation

  3. Pollution

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

While pollution can have negative impacts on ecosystems and wildlife, it is not a primary driver of species endangerment compared to habitat loss, overexploitation, and climate change.

Multiple choice

What is the primary cause of habitat loss and fragmentation for many endangered species?

  1. Deforestation

  2. Urbanization

  3. Mining

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

Agriculture, particularly large-scale farming and deforestation for agricultural land, is a major contributor to habitat loss and fragmentation.

Multiple choice

What was the primary reason for the decline of the North Atlantic cod fishery in the 1990s?

  1. Overfishing

  2. Pollution

  3. Climate change

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

Overfishing was the primary reason for the decline of the North Atlantic cod fishery in the 1990s, leading to a moratorium on cod fishing in many areas.

Multiple choice

The 'tragedy of the commons' refers to:

  1. The overexploitation of shared resources due to individual incentives

  2. The depletion of natural resources caused by industrial activities

  3. The loss of biodiversity resulting from habitat destruction

  4. The increase in air pollution due to vehicular emissions
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The 'tragedy of the commons' illustrates the challenges of managing shared resources when individual actions can lead to collective harm.

Multiple choice

What is the main cause of coral bleaching, a phenomenon that threatens coral reef health?

  1. Rising Sea Temperatures

  2. Overfishing

  3. Pollution

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

Rising sea temperatures, primarily due to climate change, are the leading cause of coral bleaching, which can lead to coral death and reef degradation.

Multiple choice

Which of the following is a major threat to the biodiversity of the Polar Regions?

  1. Climate Change

  2. Habitat Destruction

  3. Pollution

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

Climate change poses a significant threat to the biodiversity of the Polar Regions, as rising temperatures lead to melting ice caps, habitat loss, and disruptions to ecosystems.

Multiple choice

Which of the following is a major threat to the survival of polar bears?

  1. Habitat Loss

  2. Climate Change

  3. Pollution

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

Climate change and habitat loss due to melting sea ice pose major threats to the survival of polar bears.

Multiple choice

What are the main threats to wetlands?

  1. Pollution, climate change, and habitat loss

  2. Invasive species, overexploitation, and unsustainable agriculture

  3. Dams, levees, and channelization

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

The main threats to wetlands include pollution, climate change, habitat loss, invasive species, overexploitation, unsustainable agriculture, dams, levees, and channelization.

Multiple choice

How does coral bleaching affect coastal ecosystems?

  1. It can lead to the death of corals

  2. It can disrupt the food chain

  3. It can reduce the resilience of coastal ecosystems to climate change

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

Coral bleaching can have a devastating impact on coastal ecosystems. It can lead to the death of corals, disrupt the food chain, and reduce the resilience of coastal ecosystems to climate change.

Multiple choice

Which human right is most directly affected by the loss of biodiversity?

  1. The right to life

  2. The right to health

  3. The right to food

  4. The right to culture
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

The loss of biodiversity can have a direct impact on the right to life, the right to health, the right to food, and the right to culture.

Multiple choice

Which of the following is NOT a common type of threat to riverine ecosystems?

  1. Pollution

  2. Climate change

  3. Invasive species

  4. Sustainable fishing practices
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sustainable fishing practices are not typically considered a threat to riverine ecosystems, as they aim to maintain healthy fish populations.

Multiple choice

What is the primary cause of habitat destruction in coral reefs?

  1. Overfishing

  2. Climate Change

  3. Pollution

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

Climate change, particularly rising sea temperatures, is the primary cause of habitat destruction in coral reefs, leading to coral bleaching and death.

Multiple choice

Which factor contributes to habitat destruction in wetlands?

  1. Dams and Levees

  2. Invasive Species

  3. Water Pollution

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

Habitat destruction in wetlands can be caused by dams and levees altering water flow, invasive species outcompeting native species, and water pollution degrading the ecosystem.

Multiple choice

How does urbanization contribute to habitat destruction?

  1. Fragmentation

  2. Pollution

  3. Increased Resource Consumption

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

Urbanization leads to habitat destruction through fragmentation of natural areas, pollution from industries and vehicles, and increased resource consumption, driving demand for land conversion.

Multiple choice

What is the primary cause of habitat destruction in grasslands?

  1. Agriculture

  2. Mining

  3. Climate Change

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

Agriculture, particularly the conversion of grasslands for crops and livestock grazing, is the primary cause of habitat destruction in grasslands.