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 major threat to conservation?

  1. Habitat loss and fragmentation

  2. Climate change

  3. Pollution

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

Sustainable development is a strategy for economic and social development that aims to meet the needs of the present without compromising the ability of future generations to meet their own needs. It is not a threat to conservation, but rather a potential solution.

Multiple choice

What is the primary cause of habitat loss and fragmentation?

  1. Agriculture

  2. Urbanization

  3. Mining

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

Habitat loss and fragmentation can be caused by a variety of human activities, including agriculture, urbanization, mining, and other forms of development. These activities can destroy or degrade natural habitats, making them unsuitable for wildlife.

Multiple choice

What is the main cause of the decline of coral reefs?

  1. Climate change

  2. Overfishing

  3. Pollution

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

The decline of coral reefs is caused by a combination of factors, including climate change, overfishing, pollution, and other human activities. Climate change is causing the ocean to become warmer and more acidic, which is harmful to corals. Overfishing can reduce the number of herbivorous fish that graze on algae, which can lead to an overgrowth of algae that can smother corals. Pollution can also harm corals and disrupt coral reef ecosystems.

Multiple choice

What is the main cause of the decline of amphibian populations?

  1. Habitat loss and fragmentation

  2. Climate change

  3. Pollution

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

The main cause of the decline of amphibian populations is disease, particularly a fungal disease called chytridiomycosis. Chytridiomycosis is a deadly disease that affects amphibians' skin and can lead to death. It is thought to have been spread by the global trade in amphibians.

Multiple choice

What are the major threats to the mangrove ecosystems of India?

  1. Deforestation

  2. Pollution

  3. Climate change

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

Deforestation, pollution, and climate change are all major threats to the mangrove ecosystems of India.

Multiple choice

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

  1. Climate Change

  2. Overfishing

  3. Pollution

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

While climate change poses significant threats to terrestrial ecosystems, it is not a direct threat to marine biodiversity.

Multiple choice

Which human activity is considered a major threat to coral reefs?

  1. Overfishing

  2. Pollution

  3. Climate Change

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

Overfishing, pollution, and climate change are all major threats to coral reefs, leading to their degradation and loss.

Multiple choice

What is the term used to describe the decline in pollinator populations?

  1. Pollinator decline

  2. Pollinator loss

  3. Pollinator extinction

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

Pollinator decline is the term used to describe the decline in pollinator populations.

Multiple choice

Which of the following is NOT a factor contributing to pollinator decline?

  1. Habitat loss

  2. Climate change

  3. Pesticide use

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

Invasive species are not a factor contributing to pollinator decline.

Multiple choice

What is habitat loss?

  1. The reduction or destruction of natural habitats

  2. The increase in the size of natural habitats

  3. The movement of species from one habitat to another

  4. The introduction of non-native species into a habitat
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat loss refers to the process by which natural habitats are reduced or destroyed, often due to human activities such as deforestation, urbanization, and agriculture.

Multiple choice

What is habitat fragmentation?

  1. The breaking up of a habitat into smaller, isolated patches

  2. The merging of two or more habitats into a single, larger habitat

  3. The movement of species from one habitat to another

  4. The introduction of non-native species into a habitat
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat fragmentation occurs when a habitat is divided into smaller, isolated patches, often due to human activities such as road construction, agriculture, and development.

Multiple choice

What are the main causes of habitat loss and fragmentation?

  1. Deforestation, urbanization, and agriculture

  2. Climate change and natural disasters

  3. Pollution and invasive species

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

Habitat loss and fragmentation are primarily caused by human activities such as deforestation, urbanization, and agriculture, as well as by climate change, natural disasters, pollution, and invasive species.

Multiple choice

What are the impacts of habitat loss and fragmentation on biodiversity?

  1. Loss of species and genetic diversity

  2. Increased risk of extinction

  3. Disruption of ecological processes

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

Habitat loss and fragmentation can lead to the loss of species and genetic diversity, an increased risk of extinction, and the disruption of ecological processes, such as pollination and seed dispersal.

Multiple choice

Which species are most vulnerable to habitat loss and fragmentation?

  1. Species with specialized habitat requirements

  2. Species with small population sizes

  3. Species that are slow to reproduce

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

Species that are most vulnerable to habitat loss and fragmentation include those with specialized habitat requirements, small population sizes, and slow reproductive rates.

Multiple choice

What is the difference between habitat loss and habitat degradation?

  1. Habitat loss is the complete destruction of a habitat, while habitat degradation is the partial destruction or alteration of a habitat

  2. Habitat loss is the reduction in the size of a habitat, while habitat degradation is the reduction in the quality of a habitat

  3. Habitat loss is the conversion of a habitat to a different type of habitat, while habitat degradation is the alteration of a habitat's natural features

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

Habitat loss is the complete destruction or reduction in the size of a habitat, while habitat degradation is the partial destruction or alteration of a habitat's natural features, resulting in a reduction in its quality.