Environmental Studies ยท Biology

Ecology and Biodiversity

1,737 Questions

Ecology and biodiversity are vital topics in environmental studies, covering ecosystem structures, species diversity, and environmental impacts. These concepts are frequently tested in competitive examinations for civil services and state selections. The questions cover carrying capacity, ecological succession, and conservation fundamentals.

Species richness measurementTypes of ecological diversityBiome distribution factorsCarrying capacity conceptEcosystem servicesEnvironmental Impact Assessment

Ecology and Biodiversity Questions

Multiple choice

How do supporting services contribute to the overall functioning of ecosystems?

  1. By providing the necessary conditions for nutrient cycling

  2. By facilitating the flow of energy through ecosystems

  3. By regulating climate and water resources

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

Supporting services play a crucial role in the overall functioning of ecosystems by providing the necessary conditions for nutrient cycling, facilitating the flow of energy through ecosystems, and regulating climate and water resources.

Multiple choice

How does land use change affect landscape patterns?

  1. It alters the composition and configuration of landscape elements

  2. It increases landscape heterogeneity

  3. It decreases landscape connectivity

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

Land use change can alter the composition and configuration of landscape elements, increase landscape heterogeneity, and decrease landscape connectivity.

Multiple choice

Which of the following is NOT a supporting service provided by ecosystems?

  1. Pollination

  2. Water cycling

  3. Soil formation

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

Pollination is a regulating service, not a supporting service.

Multiple choice

Which of the following is an example of a supporting service that helps ecosystems recover from climate-related disturbances?

  1. Soil formation

  2. Water cycling

  3. Nutrient cycling

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

Soil formation, water cycling, and nutrient cycling are all supporting services that help ecosystems recover from climate-related disturbances by providing the resources and conditions necessary for plant growth and ecosystem regeneration.

Multiple choice

Which of the following is an example of a supporting service that helps maintain biodiversity?

  1. Biodiversity maintenance

  2. Water cycling

  3. Nutrient cycling

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

Biodiversity maintenance is a supporting service that helps maintain biodiversity by providing the conditions and resources that allow different species to coexist and thrive.

Multiple choice

What is biodiversity?

  1. The variety of life on Earth.

  2. The number of different species on Earth.

  3. The genetic diversity within a species.

  4. The distribution of species across the Earth.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity refers to the variety of life on Earth, including the variety of species, the genetic diversity within species, and the variety of ecosystems.

Multiple choice

What is biodiversity?

  1. The variety of life on Earth, including the variety of species, ecosystems, and genes.

  2. The number of different species on Earth.

  3. The amount of genetic diversity within a species.

  4. The number of different ecosystems on Earth.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity refers to the variety of life on Earth, including the variety of species, ecosystems, and genes. It is essential for the functioning of ecosystems and for human well-being.

Multiple choice

What is the economic value of biodiversity?

  1. Trillions of dollars per year.

  2. Hundreds of billions of dollars per year.

  3. Tens of billions of dollars per year.

  4. Billions of dollars per year.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The economic value of biodiversity is estimated to be in the trillions of dollars per year. This value includes the benefits that people get from ecosystems, such as food, water, and climate regulation, as well as the benefits that people get from biodiversity, such as recreation and tourism.

Multiple choice

What is the difference between biodiversity and ecosystem services?

  1. Biodiversity is the variety of life on Earth, while ecosystem services are the benefits that people get from ecosystems.

  2. Biodiversity is the number of different species on Earth, while ecosystem services are the benefits that people get from those species.

  3. Biodiversity is the amount of genetic diversity within a species, while ecosystem services are the benefits that people get from that genetic diversity.

  4. Biodiversity is the variety of ecosystems on Earth, while ecosystem services are the benefits that people get from those ecosystems.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity is the variety of life on Earth, including the variety of species, ecosystems, and genes. Ecosystem services are the benefits that people get from ecosystems, such as food, water, and climate regulation.

Multiple choice

Which of the following is NOT considered a supporting service in ecosystems?

  1. Soil formation

  2. Pollination

  3. Water cycling

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

Pollination is considered a regulating service, as it directly affects the reproductive success of plants and contributes to biodiversity.

Multiple choice

Which supporting service is particularly important for maintaining biodiversity?

  1. Soil formation

  2. Nutrient cycling

  3. Water cycling

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

Nutrient cycling ensures the availability of essential nutrients for plant growth and supports the functioning of ecosystems. It is crucial for maintaining biodiversity by providing the necessary resources for a wide range of species.

Multiple choice

What is functional diversity?

  1. The variety of traits and functions performed by organisms in an ecosystem.

  2. The number of different species in an ecosystem.

  3. The genetic diversity within a species.

  4. The physical diversity of an ecosystem.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Functional diversity refers to the variety of traits and functions performed by organisms in an ecosystem. This includes the different ways that organisms acquire and use resources, interact with each other, and affect their environment.

Multiple choice

Which of the following is an example of how pollution can alter the traits and functions of organisms?

  1. Exposure to pesticides can make insects more resistant to pesticides.

  2. Exposure to oil can cause marine mammals to develop reproductive problems.

  3. Exposure to air pollution can cause plants to produce fewer flowers.

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

All of the above are examples of how pollution can alter the traits and functions of organisms. Exposure to pesticides can make insects more resistant to pesticides, which can make it more difficult to control insect pests. Exposure to oil can cause marine mammals to develop reproductive problems, which can reduce their population size. Exposure to air pollution can cause plants to produce fewer flowers, which can reduce the amount of food available for pollinators.

Multiple choice

Which of the following is not a type of functional diversity?

  1. Species richness.

  2. Functional richness.

  3. Functional evenness.

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

Species richness is a measure of the number of species in an ecosystem. Functional diversity, on the other hand, is a measure of the variety of traits and functions performed by organisms in an ecosystem. Functional richness is a measure of the total number of functions performed by organisms in an ecosystem. Functional evenness is a measure of how evenly the functions are distributed among the species in an ecosystem. Functional divergence is a measure of how different the functions performed by different species are.

Multiple choice

The fundamental niche of an organism represents:

  1. The range of resources and conditions that an organism can potentially occupy

  2. The range of resources and conditions that an organism actually occupies

  3. The range of resources and conditions that an organism prefers

  4. The range of resources and conditions that an organism can tolerate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The fundamental niche represents the full range of resources and conditions that an organism is capable of utilizing, regardless of competition or other limiting factors.