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

Which of the following is an example of an ecosystem that is resilient to disturbances?

  1. Coral reefs

  2. Rainforests

  3. Grasslands

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

Coral reefs, rainforests, and grasslands are all examples of ecosystems that are resilient to disturbances.

Multiple choice

What is the term for the gradual change in the composition of a community over time?

  1. Ecological Succession

  2. Evolution

  3. Adaptation

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

Ecological succession is the process by which a community of organisms changes over time, as new species enter and others leave.

Multiple choice

Which of the following is NOT a stage in ecological succession?

  1. Pioneer Species

  2. Climax Community

  3. Secondary Succession

  4. Primary Succession
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Secondary succession is a type of ecological succession that occurs after a disturbance, such as a fire or flood, has cleared an area of vegetation.

Multiple choice

What is the final stage of ecological succession?

  1. Pioneer Species

  2. Climax Community

  3. Secondary Succession

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

The climax community is the final stage of ecological succession, and it is characterized by a stable and diverse community of organisms.

Multiple choice

What is the role of climax species in ecological succession?

  1. They are the first to colonize an area after a disturbance.

  2. They are the final stage of ecological succession.

  3. They are adapted to harsh conditions and can survive with few resources.

  4. They are responsible for the majority of the biomass in a community.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Climax species are the final stage of ecological succession, and they are characterized by a stable and diverse community of organisms.

Multiple choice

What are some of the factors that can influence ecological succession?

  1. Climate

  2. Soil conditions

  3. Disturbances

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

Climate, soil conditions, and disturbances are all factors that can influence ecological succession.

Multiple choice

Which of the following is NOT a stage in ecological succession?

  1. Pioneer Species

  2. Climax Community

  3. Secondary Succession

  4. Primary Succession
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Secondary succession is a type of ecological succession that occurs after a disturbance, such as a fire or flood, has cleared an area of vegetation.

Multiple choice

What is the final stage of ecological succession?

  1. Pioneer Species

  2. Climax Community

  3. Secondary Succession

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

The climax community is the final stage of ecological succession, and it is characterized by a stable and diverse community of organisms.

Multiple choice

Which of the following is NOT an example of an ecosystem service?

  1. Pollination of crops by insects.

  2. Carbon sequestration by forests.

  3. Decomposition of organic matter by bacteria.

  4. Manufacturing of goods by humans.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ecosystem services are the benefits that humans derive from natural ecosystems. Manufacturing of goods is a human activity and not a natural process. Therefore, it is not considered an ecosystem service.

Multiple choice

Which ecosystem service is primarily responsible for regulating Earth's climate?

  1. Water purification.

  2. Biodiversity.

  3. Carbon sequestration.

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

Carbon sequestration is the process by which carbon dioxide is removed from the atmosphere and stored in plants, soil, and oceans. This process helps regulate Earth's climate by reducing greenhouse gas concentrations and mitigating the effects of global warming.

Multiple choice

Which of the following is NOT a factor that influences biogeographic patterns?

  1. Climate

  2. Soil type

  3. Topography

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

Human activity is not a natural factor that influences biogeographic patterns.

Multiple choice

What is the concept of 'ecological footprint' used to measure?

  1. The amount of land and water required to sustain a population

  2. The amount of waste and pollution generated by a population

  3. The amount of energy consumed by a population

  4. The amount of biodiversity lost due to human activities
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecological footprint is a measure of the amount of land and water required to sustain a population, taking into account the consumption of resources and the generation of waste and pollution.

Multiple choice

What is the concept of 'planetary boundaries' used to describe?

  1. The limits beyond which human activities can cause irreversible damage to the Earth's ecosystems.

  2. The limits beyond which human activities can cause irreversible damage to the Earth's atmosphere.

  3. The limits beyond which human activities can cause irreversible damage to the Earth's oceans.

  4. The limits beyond which human activities can cause irreversible damage to the Earth's biodiversity.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Planetary boundaries are a concept that identifies the limits beyond which human activities can cause irreversible damage to the Earth's ecosystems.

Multiple choice

What is the term used to describe the vertical distribution of organisms on a mountain?

  1. Altitudinal Zonation

  2. Latitudinal Zonation

  3. Longitudinal Zonation

  4. Topographic Zonation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Altitudinal Zonation refers to the distinct changes in vegetation, climate, and species composition that occur along the elevation gradient of a mountain.

Multiple choice

What is the term used to describe the boundary between two altitudinal zones?

  1. Ecotone

  2. Transition Zone

  3. Buffer Zone

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

An ecotone is a transitional zone between two adjacent ecological communities, where the two communities meet and interact.