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 used to describe the rate at which organic matter is produced by consumers in an ecosystem?

  1. Primary production

  2. Secondary production

  3. Net primary production

  4. Gross primary production
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Secondary production is the rate at which organic matter is produced by consumers in an ecosystem.

Multiple choice

What is the importance of primary production in an ecosystem?

  1. It provides food for consumers.

  2. It produces oxygen.

  3. It helps to regulate the climate.

  4. It provides habitat for wildlife.

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

All of the above are importance of primary production in an ecosystem.

Multiple choice

What is the importance of secondary production in an ecosystem?

  1. It provides food for tertiary consumers.

  2. It helps to control populations of primary consumers.

  3. It helps to recycle nutrients.

  4. It helps to maintain biodiversity.

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

All of the above are importance of secondary production in an ecosystem.

Multiple choice

In population ecology, what is the mathematical expression for the carrying capacity of an environment?

  1. $K = N_{max}$
  2. $K = N_{min}$
  3. $K = N_{avg}$
  4. $K = N_{eq}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The carrying capacity of an environment, denoted by $K$, represents the maximum population size that can be sustained by the environment's resources, and it is often considered to be the equilibrium population size ($N_{eq}$).

Multiple choice

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

  1. Soil formation

  2. Pollination

  3. Climate regulation

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

Food production is a provisioning service, not a supporting service.

Multiple choice

Which supporting service is essential for the cycling of nutrients in ecosystems?

  1. Soil formation

  2. Nutrient cycling

  3. Water cycling

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

Nutrient cycling is a fundamental supporting service that ensures the availability of essential nutrients for plant growth and ecosystem productivity.

Multiple choice

Which supporting service is responsible for regulating the Earth's climate?

  1. Climate regulation

  2. Water cycling

  3. Pollination

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

Climate regulation is a vital supporting service that helps to maintain a stable and habitable climate for life on Earth.

Multiple choice

Which supporting service is essential for the formation of new landmasses?

  1. Soil formation

  2. Water cycling

  3. Pollination

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

Soil formation is essential for the formation of new landmasses, as it creates a stable foundation for plant growth and the development of ecosystems.

Multiple choice

Which supporting service is essential for the survival of terrestrial ecosystems?

  1. Soil formation

  2. Water cycling

  3. Pollination

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

Soil formation is essential for the survival of terrestrial ecosystems, as it provides a stable foundation for plant growth and the development of ecosystems.

Multiple choice

What is the term used to describe the interconnectedness and interdependence of all living organisms, including humans, with their natural environment?

  1. Ecosystem services

  2. Biodiversity

  3. Habitat connectivity

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

Ecological balance refers to the interconnectedness and interdependence of all living organisms, including humans, with their natural environment, emphasizing the delicate equilibrium that sustains life on Earth.

Multiple choice

Which of the following is NOT an example of an ecosystem service provided by natural habitats?

  1. Provision of clean air and water

  2. Regulation of climate

  3. Pollination of crops

  4. Production of fossil fuels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fossil fuels, such as coal, oil, and natural gas, are not produced by natural habitats themselves but are formed through geological processes over millions of years.

Multiple choice

What is the term for the balance between energy flow and nutrient cycling in an ecosystem?

  1. Ecosystem equilibrium

  2. Ecosystem stability

  3. Ecosystem resilience

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

Ecosystem equilibrium, ecosystem stability, and ecosystem resilience are all terms for the balance between energy flow and nutrient cycling in an ecosystem.

Multiple choice

Which of the following is NOT a type of biodiversity?

  1. Species diversity

  2. Genetic diversity

  3. Ecosystem diversity

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

Cultural diversity is not a type of biodiversity. Biodiversity refers to the variety of life on Earth, including species diversity, genetic diversity, and ecosystem diversity.

Multiple choice

What is landscape structure?

  1. The arrangement of different habitat types in a landscape

  2. The composition of different species in a landscape

  3. The physical features of a landscape, such as topography and climate

  4. The human activities that occur in a landscape
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Landscape structure refers to the spatial arrangement of different habitat types or land cover types within a landscape. It includes the size, shape, and connectivity of habitat patches, as well as the composition and configuration of the landscape matrix.

Multiple choice

What is connectivity in landscape ecology?

  1. The degree to which different habitat patches are connected to each other

  2. The ability of species to move between different habitat patches

  3. The exchange of energy, nutrients, and organisms between different parts of a landscape

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

Connectivity in landscape ecology refers to the degree to which different habitat patches are connected to each other, the ability of species to move between different habitat patches, and the exchange of energy, nutrients, and organisms between different parts of a landscape.