Environmental Studies ยท Biology

Ecology and Biodiversity

1,739 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

What is the term for the study of the distribution and abundance of organisms?

  1. Biogeography

  2. Population Ecology

  3. Community Ecology

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

Biogeography is the study of the distribution and abundance of organisms. This field of study seeks to understand why organisms are found where they are and how their distributions have changed over time.

Multiple choice

Which of the following is NOT a common type of ecological model?

  1. Deterministic models

  2. Stochastic models

  3. Agent-based models

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

Linear models are typically used in statistical analysis and regression, but they are not commonly used in ecological modeling, which often involves nonlinear relationships and complex interactions.

Multiple choice

Which of the following is NOT a common type of ecological simulation model?

  1. Individual-based models

  2. Population-based models

  3. Ecosystem-based models

  4. Community-based models
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Community-based models are not a common type of ecological simulation model. Instead, ecological simulation models typically focus on individuals, populations, or ecosystems as the primary unit of analysis.

Multiple choice

Which of the following is NOT a supporting service that contributes to nutrient cycling in forest ecosystems?

  1. Decomposition

  2. Pollination

  3. Water cycling

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

Pollination is a process that facilitates the transfer of pollen from the male anther to the female stigma of a flower, leading to fertilization and seed production. While pollination is an important ecological process, it is not directly involved in nutrient cycling in forest ecosystems.

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

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.