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 point at which the prey population is at its highest and the predator population is at its lowest?

  1. Peak predator

  2. Peak prey

  3. Predator-prey equilibrium

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

Peak prey is the point in a predator-prey cycle when the prey population is at its highest and the predator population is at its lowest.

Multiple choice

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

  1. Peak predator

  2. Peak prey

  3. Predator-prey equilibrium

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

Carrying capacity is the maximum population size that an environment can support, based on the available resources.

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 Richness
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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

Multiple choice

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

  1. Climate regulation

  2. Water purification

  3. Pollination

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

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

Multiple choice

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

  1. Food

  2. Water

  3. Timber

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

Biodiversity is not a provisioning service, but rather a supporting service that underpins the functioning of ecosystems and the provision of all other ecosystem services.

Multiple choice

Which landscape metric is used to quantify the amount of edge habitat in a fragmented landscape?

  1. Patch Density

  2. Edge Density

  3. Mean Patch Size

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

Edge density is a measure of the amount of edge habitat in a landscape, calculated as the total length of all edges divided by the total area of the landscape.

Multiple choice

What does the term 'fractal dimension' represent in the context of habitat fragmentation?

  1. The complexity of habitat edges

  2. The degree of habitat connectivity

  3. The number of habitat patches

  4. The size of the largest habitat patch
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fractal dimension is a measure of the complexity of habitat edges, quantifying their irregularity and sinuosity.

Multiple choice

Which landscape metric is used to quantify the isolation of habitat patches?

  1. Isolation Index

  2. Proximate Patch Index

  3. Aggregation Index

  4. Interspersion and Juxtaposition Index
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The isolation index measures the degree to which habitat patches are isolated from each other, considering both the distance between patches and the amount of intervening habitat.

Multiple choice

The concept of 'core habitat' in the context of habitat fragmentation refers to:

  1. Habitat patches with high connectivity

  2. Habitat patches with low edge density

  3. Habitat patches with high species richness

  4. Habitat patches with large size
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Core habitat refers to habitat patches with low edge density, providing interior conditions with reduced exposure to edge effects.

Multiple choice

Which measure quantifies the total amount of habitat in a fragmented landscape?

  1. Patch Density

  2. Total Edge Length

  3. Total Habitat Area

  4. Mean Patch Size
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total habitat area is a measure of the total amount of habitat in a fragmented landscape, regardless of patch size or configuration.

Multiple choice

The concept of 'beta diversity' is related to:

  1. Species turnover between habitats

  2. Species richness within a habitat

  3. Genetic diversity within a population

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

Beta diversity measures the species turnover between different habitats or communities, reflecting the change in species composition across a landscape.

Multiple choice

Which landscape metric is used to quantify the shape complexity of habitat patches?

  1. Shape Index

  2. Fractal Dimension

  3. Edge Density

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

Shape index is a measure of the shape complexity of habitat patches, quantifying their deviation from a simple geometric shape.

Multiple choice

The concept of 'landscape connectivity' refers to:

  1. The degree of physical connections between habitat patches

  2. The similarity in species composition between adjacent habitats

  3. The amount of edge habitat in a landscape

  4. The size of the largest habitat patch
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Landscape connectivity refers to the degree to which habitat patches are connected by corridors or other dispersal routes, allowing for movement of species between patches.

Multiple choice

Which measure quantifies the average size of habitat patches in a fragmented landscape?

  1. Mean Patch Size

  2. Total Edge Length

  3. Total Habitat Area

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

Mean patch size is a measure of the average size of habitat patches in a fragmented landscape, calculated by dividing the total habitat area by the number of patches.

Multiple choice

Which landscape metric is used to quantify the degree of clumping or aggregation of habitat patches?

  1. Aggregation Index

  2. Interspersion and Juxtaposition Index

  3. Patch Density

  4. Mean Patch Size
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The aggregation index measures the degree to which habitat patches are clumped or aggregated together, rather than being evenly distributed across the landscape.