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 ability of an ecosystem to maintain its structure and function in the face of disturbances?

  1. Resilience

  2. Sustainability

  3. Biodiversity

  4. Carrying capacity
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A Correct answer
Explanation

Resilience refers to the ability of an ecosystem to withstand and recover from disturbances, ensuring its long-term stability and functioning.

Multiple choice

What is the term used to describe the maximum population size that an environment can sustain indefinitely?

  1. Carrying capacity

  2. Ecological footprint

  3. Population density

  4. Growth rate
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A Correct answer
Explanation

Carrying capacity refers to the maximum population size that an environment can support without degrading its resources or compromising its ability to meet the needs of future generations.

Multiple choice

What is the term used to describe the ability of an ecosystem to recover from disturbances and maintain its structure and function?

  1. Resilience

  2. Sustainability

  3. Biodiversity

  4. Carrying capacity
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A Correct answer
Explanation

Resilience refers to the ability of an ecosystem to withstand and recover from disturbances, ensuring its long-term stability and functioning.

Multiple choice

The term 'biodiversity' encompasses the variety of life on Earth. What does the 'bio' in biodiversity stand for?

  1. Biology

  2. Biosphere

  3. Biotic

  4. Biogenesis
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C Correct answer
Explanation

The term 'biodiversity' is derived from 'biological diversity' or 'biotic diversity'. It refers to the variety of life on Earth, including the diversity of species, ecosystems, and genetic variation within species.

Multiple choice

What is an ecosystem?

  1. A community of living organisms in conjunction with the nonliving components of their environment (things like air, water and soil), interacting as a system.

  2. A group of organisms of the same species that live in the same area.

  3. A physical environment in which a community of living organisms normally lives.

  4. A group of organisms of different species that live in the same area.
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A Correct answer
Explanation

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment (things like air, water and soil), interacting as a system.

Multiple choice

What is a biome?

  1. A large-scale community of plants and animals that occupies a distinct region on Earth.

  2. A group of organisms of the same species that live in the same area.

  3. A physical environment in which a community of living organisms normally lives.

  4. A group of organisms of different species that live in the same area.
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A Correct answer
Explanation

A biome is a large-scale community of plants and animals that occupies a distinct region on Earth.

Multiple choice

What are the major factors that determine the distribution of biomes?

  1. Climate, soil, and topography.

  2. Climate, water, and soil.

  3. Climate, temperature, and water.

  4. Climate, altitude, and water.
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A Correct answer
Explanation

The major factors that determine the distribution of biomes are climate, soil, and topography.

Multiple choice

According to the equilibrium theory of island biogeography, what is the main factor determining the number of species found on an island?

  1. Island size

  2. Distance from the mainland

  3. Habitat diversity

  4. Climate
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A Correct answer
Explanation

The equilibrium theory of island biogeography states that the number of species found on an island is determined primarily by the island's size, with larger islands supporting more species than smaller islands.

Multiple choice

The concept of island biogeography is applied in the field of:

  1. Conservation biology

  2. Ecology

  3. Evolutionary biology

  4. Biogeography
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A Correct answer
Explanation

Island biogeography is applied in conservation biology to inform conservation strategies, such as prioritizing areas for protection and managing invasive species.

Multiple choice

The equilibrium theory of island biogeography predicts that the number of species on an island will:

  1. Increase over time

  2. Decrease over time

  3. Remain constant over time

  4. Fluctuate over time
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C Correct answer
Explanation

The equilibrium theory of island biogeography predicts that the number of species on an island will reach an equilibrium, where the rate of immigration and extinction is balanced.

Multiple choice

What is the term used to describe the variety of life on Earth, including the diversity of species, ecosystems, and genetic variation?

  1. Biodiversity

  2. Ecosystem Diversity

  3. Genetic Diversity

  4. Species Diversity
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A Correct answer
Explanation

Biodiversity encompasses the entire spectrum of life on Earth, including the variety of species, ecosystems, and genetic variation within species.

Multiple choice

What is the primary focus of landscape ecology?

  1. The study of individual organisms and their interactions.

  2. The study of populations and their dynamics.

  3. The study of communities and their interactions.

  4. The study of ecosystems and their interactions.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Landscape ecology is the study of the interactions between ecosystems and their components, including the physical environment, organisms, and human activities.

Multiple choice

What is a landscape mosaic?

  1. A heterogeneous arrangement of ecosystems within a region.

  2. A homogeneous arrangement of ecosystems within a region.

  3. A random arrangement of ecosystems within a region.

  4. A clustered arrangement of ecosystems within a region.
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A Correct answer
Explanation

A landscape mosaic is a heterogeneous arrangement of ecosystems within a region, resulting from the interaction of natural and human processes.

Multiple choice

What is the concept of scale in landscape ecology?

  1. The spatial and temporal extent of ecological processes.

  2. The size and shape of ecosystems.

  3. The number of species in an ecosystem.

  4. The productivity of an ecosystem.
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A Correct answer
Explanation

Scale in landscape ecology refers to the spatial and temporal extent of ecological processes, which can range from local to regional scales and from short-term to long-term scales.

Multiple choice

What is a landscape matrix?

  1. The dominant ecosystem type in a landscape.

  2. The non-dominant ecosystem type in a landscape.

  3. The area between patches of different ecosystems.

  4. The area within patches of different ecosystems.
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C Correct answer
Explanation

A landscape matrix is the area between patches of different ecosystems, which can influence the movement and interactions of organisms.