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 concept of connectivity in landscape ecology?

  1. The degree to which different ecosystems are linked together.

  2. The degree to which different species are linked together.

  3. The degree to which different populations are linked together.

  4. The degree to which different communities are linked together.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Connectivity in landscape ecology refers to the degree to which different ecosystems are linked together, which can influence the movement and interactions of organisms.

Multiple choice

What is a landscape corridor?

  1. A narrow strip of land that connects two or more patches of the same ecosystem.

  2. A narrow strip of land that connects two or more patches of different ecosystems.

  3. A wide strip of land that connects two or more patches of the same ecosystem.

  4. A wide strip of land that connects two or more patches of different ecosystems.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A landscape corridor is a narrow strip of land that connects two or more patches of the same ecosystem, allowing for the movement and interactions of organisms.

Multiple choice

What is a landscape stepping stone?

  1. A small patch of habitat that is isolated from other patches.

  2. A small patch of habitat that is connected to other patches.

  3. A large patch of habitat that is isolated from other patches.

  4. A large patch of habitat that is connected to other patches.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A landscape stepping stone is a small patch of habitat that is connected to other patches, allowing for the movement and interactions of organisms.

Multiple choice

What is the concept of edge effects in landscape ecology?

  1. The changes in environmental conditions that occur at the boundary between two different ecosystems.

  2. The changes in environmental conditions that occur within the interior of an ecosystem.

  3. The changes in environmental conditions that occur at the boundary between two different populations.

  4. The changes in environmental conditions that occur within the interior of a population.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Edge effects in landscape ecology refer to the changes in environmental conditions that occur at the boundary between two different ecosystems, which can influence the distribution and abundance of organisms.

Multiple choice

What is the concept of landscape heterogeneity in landscape ecology?

  1. The degree to which a landscape is composed of different types of ecosystems.

  2. The degree to which a landscape is composed of the same type of ecosystem.

  3. The degree to which a landscape is composed of different types of landforms.

  4. The degree to which a landscape is composed of the same type of landforms.
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A Correct answer
Explanation

Landscape heterogeneity in landscape ecology refers to the degree to which a landscape is composed of different types of ecosystems, which can influence the distribution and abundance of organisms.

Multiple choice

What is the concept of landscape disturbance in landscape ecology?

  1. Any event that changes the structure or function of a landscape.

  2. Any event that changes the composition of a landscape.

  3. Any event that changes the size of a landscape.

  4. Any event that changes the shape of a landscape.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Landscape disturbance in landscape ecology refers to any event that changes the structure or function of a landscape, including natural disturbances (e.g., fire, floods, storms) and human-caused disturbances (e.g., agriculture, urbanization, mining).

Multiple choice

What is the concept of landscape sustainability in landscape ecology?

  1. The ability of a landscape to maintain its ecological integrity over time.

  2. The ability of a landscape to provide ecosystem services to humans over time.

  3. The ability of a landscape to support human populations over time.

  4. The ability of a landscape to resist or recover from disturbance over time.
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A Correct answer
Explanation

Landscape sustainability in landscape ecology refers to the ability of a landscape to maintain its ecological integrity over time, including the ability to provide ecosystem services to humans and support human populations.

Multiple choice

What is the concept of carrying capacity in relation to environmental stewardship?

  1. The maximum population size that an environment can support without degradation.

  2. The rate at which a population grows or declines.

  3. The amount of resources available in an environment.

  4. The ability of an environment to absorb pollution.
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A Correct answer
Explanation

Carrying capacity refers to the maximum population size that an environment can support without degradation, considering the availability of resources and the ability of the environment to absorb waste and pollution.

Multiple choice

Which of the following is NOT a characteristic of a river ecosystem?

  1. Flowing water

  2. Diverse habitats

  3. High levels of dissolved oxygen

  4. Absence of vegetation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

River ecosystems are characterized by flowing water, diverse habitats, and high levels of dissolved oxygen. They support a wide variety of vegetation, including aquatic plants, riparian vegetation, and floodplain forests.

Multiple choice

What is the term used to describe the variety of life found in a river ecosystem?

  1. Biodiversity

  2. Species richness

  3. Ecological diversity

  4. Habitat diversity
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A Correct answer
Explanation

Biodiversity refers to the variety of life found in an ecosystem, including the number of species, the genetic diversity within those species, and the interactions between species and their environment.

Multiple choice

Which of the following is NOT an example of biodiversity found in a river ecosystem?

  1. Fish

  2. Insects

  3. Birds

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

Rocks are not living organisms and therefore do not contribute to the biodiversity of a river ecosystem.

Multiple choice

What is the term used to describe the variety of life on Earth, including the different species of plants, animals, and microorganisms, as well as the ecosystems in which they live?

  1. Biodiversity

  2. Ecosystem Diversity

  3. Species Diversity

  4. Genetic Diversity
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A Correct answer
Explanation

Biodiversity encompasses the variety of life forms, including species, ecosystems, and genetic variation, that exist on Earth.

Multiple choice

Which of the following is NOT a major type of biodiversity?

  1. Species Diversity

  2. Ecosystem Diversity

  3. Genetic Diversity

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

Cultural diversity refers to the variety of cultural expressions, beliefs, and practices that exist within a society, while the other options represent major types of biodiversity.

Multiple choice

The value of ecosystem services can be estimated using various methods. Which of the following is NOT a commonly used method?

  1. Market valuation

  2. Replacement cost

  3. Hedonic pricing

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

Replacement cost is not a commonly used method for estimating the value of ecosystem services, as it is often difficult to determine the cost of replacing a particular ecosystem service.

Multiple choice

Which of the following ecosystem services is particularly important for regulating climate?

  1. Carbon sequestration

  2. Water purification

  3. Pollination of crops

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

Carbon sequestration is the process by which carbon dioxide is removed from the atmosphere and stored in plants, soils, and oceans. This process helps to regulate climate by reducing the amount of greenhouse gases in the atmosphere.