Environmental Studies ยท Biology

Ecology and Biodiversity

1,737 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 NOT a supporting service provided by ecosystems?

  1. Nutrient cycling

  2. Pollination

  3. Water purification

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

Pollination is a regulating service, not a supporting service.

Multiple choice

What is functional diversity?

  1. The variety of traits and functions performed by organisms in an ecosystem.

  2. The number of different species in an ecosystem.

  3. The genetic diversity within a population.

  4. The physical structure of an ecosystem.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Functional diversity refers to the variety of traits and functions performed by organisms in an ecosystem. It is a measure of the diversity of ecological roles played by different species.

Multiple choice

How can functional diversity be measured?

  1. By measuring the abundance of different species.

  2. By measuring the diversity of functional traits.

  3. By measuring the ecosystem processes that are performed by different species.

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

Functional diversity can be measured by measuring the abundance of different species, the diversity of functional traits, and the ecosystem processes that are performed by different species.

Multiple choice

What is the term used to describe the collective genetic material of a microbial community?

  1. Metagenome

  2. Genome

  3. Transcriptome

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

Metagenome refers to the entire collection of genetic material obtained from a microbial community, encompassing the DNA of all organisms present.

Multiple choice

What term describes the interconnectedness and interdependence of organisms within an ecosystem?

  1. Food chain

  2. Habitat

  3. Web of life

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

The 'web of life' is a metaphor used to represent the complex network of interactions and dependencies between organisms in an ecosystem.

Multiple choice

Which of the following is NOT a component of an ecosystem?

  1. Producers

  2. Consumers

  3. Decomposers

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

The atmosphere is not a component of an ecosystem, but rather the surrounding environment in which an ecosystem exists.

Multiple choice

What is the term used to describe the process by which energy flows through an ecosystem?

  1. Energy cycle

  2. Food chain

  3. Trophic levels

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

Energy flow refers to the transfer of energy from one organism to another through the food chain.

Multiple choice

What is the term used to describe the process by which organisms interact with each other and their environment?

  1. Ecology

  2. Ecosystem

  3. Habitat

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

Ecology is the study of the interactions between organisms and their environment.

Multiple choice

The concept of 'habitat connectivity' refers to:

  1. The physical connection between different habitats

  2. The genetic diversity within a population

  3. The ability of a species to adapt to changing environments

  4. The rate at which a population grows
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Habitat connectivity refers to the physical connections between different habitats, allowing for the movement and dispersal of species, genetic exchange, and maintaining ecological processes.

Multiple choice

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

  1. Pollination

  2. Water cycle

  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

What is the term used to describe the variety of life on Earth?

  1. Biodiversity

  2. Ecosystem diversity

  3. Species richness

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

Biodiversity is the term used to describe the variety of life on Earth, including all living organisms and the ecosystems they inhabit.

Multiple choice

What is the term used to describe the position of an organism within a food chain?

  1. Trophic Level

  2. Ecological Niche

  3. Habitat

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

Trophic level refers to the position of an organism in a food chain, indicating its role in the transfer of energy and nutrients.

Multiple choice

What is the term used to describe the transfer of energy and nutrients from one trophic level to the next?

  1. Energy Flow

  2. Nutrient Cycling

  3. Ecological Succession

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

Energy flow refers to the transfer of energy from producers to consumers through the food chain, with each trophic level utilizing and dissipating energy.

Multiple choice

What is the term used to describe the process by which ecosystems change over time?

  1. Energy Flow

  2. Nutrient Cycling

  3. Ecological Succession

  4. Population Dynamics
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ecological succession refers to the process by which ecosystems change over time, with different communities of organisms replacing each other in a predictable sequence.

Multiple choice

What is the ecological efficiency of a secondary producer?

  1. The ratio of gross primary production to net primary production.

  2. The ratio of net primary production to secondary production.

  3. The ratio of secondary production to gross primary production.

  4. The ratio of secondary production to net primary production.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ecological efficiency is the ratio of energy transferred from one trophic level to the next. For secondary producers, ecological efficiency is the ratio of secondary production to net primary production.