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

What are the three main causes of migration?

  1. Seasonal changes, search for food or breeding grounds, and social interactions

  2. Predation, competition, and disease

  3. Birth, death, and immigration

  4. Emigration, immigration, and colonization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The three main causes of migration are seasonal changes, such as changes in temperature or day length; search for food or breeding grounds; and social interactions, such as competition or cooperation.

Multiple choice

What are the benefits of migration?

  1. Access to new food sources, reduced competition, and increased reproductive success

  2. Increased predation, increased competition, and decreased reproductive success

  3. Increased birth rate, increased death rate, and decreased immigration

  4. Increased emigration, increased immigration, and decreased colonization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The benefits of migration include access to new food sources, which can help individuals survive and reproduce; reduced competition, which can allow individuals to access more resources; and increased reproductive success, which can help populations grow.

Multiple choice

What are the costs of dispersal?

  1. Increased predation, increased competition, and decreased access to resources

  2. Increased genetic diversity, reduced competition, and access to new resources

  3. Increased birth rate, increased death rate, and decreased immigration

  4. Increased emigration, increased immigration, and decreased colonization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The costs of dispersal include increased predation, as individuals may be more vulnerable to predators when they are moving; increased competition, as individuals may have to compete with other individuals for resources in their new habitat; and decreased access to resources, as individuals may not be familiar with the resources available in their new habitat.

Multiple choice

What are the costs of migration?

  1. Increased predation, increased competition, and decreased reproductive success

  2. Access to new food sources, reduced competition, and increased reproductive success

  3. Increased birth rate, increased death rate, and decreased immigration

  4. Increased emigration, increased immigration, and decreased colonization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The costs of migration include increased predation, as individuals may be more vulnerable to predators when they are moving; increased competition, as individuals may have to compete with other individuals for resources in their new habitat; and decreased reproductive success, as individuals may not be able to find mates or suitable breeding grounds in their new habitat.

Multiple choice

What are some of the factors that affect migration?

  1. Seasonal changes, food availability, and breeding opportunities

  2. Predation, competition, and disease

  3. Birth, death, and immigration

  4. Emigration, immigration, and colonization
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The factors that affect migration include seasonal changes, such as changes in temperature or day length; food availability; and breeding opportunities.

Multiple choice

How does air pollution affect biodiversity?

  1. It can cause respiratory problems in animals and plants.

  2. It can reduce the amount of sunlight that reaches plants, which can affect their growth and reproduction.

  3. It can cause acid rain, which can damage forests and aquatic ecosystems.

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

Air pollution can have a variety of negative effects on biodiversity, including causing respiratory problems in animals and plants, reducing the amount of sunlight that reaches plants, and causing acid rain.

Multiple choice

How does land pollution affect biodiversity?

  1. It can contaminate soil and water, which can harm plants and animals.

  2. It can destroy or fragment habitats, which can reduce the number of species that can live in an area.

  3. It can introduce invasive species, which can compete with native species for resources.

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

Land pollution can have a variety of negative effects on biodiversity, including contaminating soil and water, destroying or fragmenting habitats, and introducing invasive species.

Multiple choice

How do heavy metals affect biodiversity?

  1. They can accumulate in the food chain and reach toxic levels in animals.

  2. They can damage the nervous system and reproductive system of animals.

  3. They can cause birth defects and developmental problems in animals.

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

Heavy metals can have a variety of negative effects on biodiversity, including accumulating in the food chain and reaching toxic levels in animals, damaging the nervous system and reproductive system of animals, and causing birth defects and developmental problems in animals.

Multiple choice

How do plastics affect biodiversity?

  1. They can entangle and kill marine animals.

  2. They can be ingested by animals and cause blockages or other health problems.

  3. They can leach chemicals into the environment that can harm animals and plants.

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

Plastics can have a variety of negative effects on biodiversity, including entangling and killing marine animals, being ingested by animals and causing blockages or other health problems, and leaching chemicals into the environment that can harm animals and plants.

Multiple choice

What are some of the long-term effects of pollution on biodiversity?

  1. Extinction of species.

  2. Loss of habitat.

  3. Changes in ecosystem function.

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

Pollution can have a number of long-term effects on biodiversity, including extinction of species, loss of habitat, and changes in ecosystem function.

Multiple choice

Which of the following is NOT a potential long-term impact of oil spills on marine ecosystems?

  1. Reduced biodiversity

  2. Increased disease susceptibility

  3. Bioaccumulation of toxins

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

Enhanced productivity is not a potential long-term impact of oil spills on marine ecosystems.

Multiple choice

Which of the following is NOT a potential impact of oil spills on marine mammals?

  1. Reduced reproductive success

  2. Increased susceptibility to disease

  3. Changes in behavior

  4. Improved foraging efficiency
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Improved foraging efficiency is not a potential impact of oil spills on marine mammals.

Multiple choice

Which of the following is NOT a potential impact of oil spills on seabirds?

  1. Reduced waterproofing

  2. Increased vulnerability to predators

  3. Impaired flight ability

  4. Enhanced swimming ability
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Enhanced swimming ability is not a potential impact of oil spills on seabirds.

Multiple choice

What are the main threats to biodiversity?

  1. Habitat loss and fragmentation

  2. Climate change

  3. Pollution

  4. Invasive species

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Habitat loss and fragmentation, climate change, pollution, and invasive species are all major threats to biodiversity.

Multiple choice

Which of the following is NOT a factor that can affect the carrying capacity of an ecosystem?

  1. Availability of resources

  2. Competition between species

  3. Predation

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

Climate change is not a direct factor that affects the carrying capacity of an ecosystem, although it can indirectly impact carrying capacity by altering resource availability and species interactions.