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 biodiversity?

  1. The variety of life on Earth

  2. The number of different species on Earth

  3. The distribution of different species on Earth

  4. The rate at which new species are being discovered
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity is the variety of life on Earth, including the variety of species, ecosystems, and genes.

Multiple choice

Which of the following is NOT an example of a provisioning service?

  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, as it does not directly benefit humans in the same way that food, water, timber, and fiber do.

Multiple choice

What is the concept of ecological footprint?

  1. A measure of the amount of land and water required to produce the goods and services consumed by a person or population

  2. A measure of the amount of pollution generated by a person or population

  3. A measure of the amount of natural resources consumed by a person or population

  4. All of the above
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A Correct answer
Explanation

The ecological footprint is a measure of the amount of land and water required to produce the goods and services consumed by a person or population. It is a measure of the impact of human activity on the environment.

Multiple choice

What is the concept of carrying capacity?

  1. The maximum population size that an environment can sustain indefinitely

  2. The maximum rate of resource consumption that an environment can sustain indefinitely

  3. The maximum level of pollution that an environment can absorb without being harmed

  4. All of the above
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A Correct answer
Explanation

The carrying capacity is the maximum population size that an environment can sustain indefinitely. It is determined by the availability of resources and the ability of the environment to absorb waste and pollution.

Multiple choice

What are the two main types of ecosystems?

  1. Terrestrial and aquatic

  2. Natural and artificial

  3. Open and closed

  4. Stable and unstable
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Terrestrial ecosystems are those that occur on land, while aquatic ecosystems are those that occur in water.

Multiple choice

What is the term for the study of the distribution and abundance of organisms?

  1. Ecology

  2. Biogeography

  3. Population ecology

  4. Community ecology
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biogeography is the study of the distribution and abundance of organisms across the Earth.

Multiple choice

What is the term for the colorful and diverse array of marine life found in coral reef ecosystems?

  1. Biodiversity

  2. Endemism

  3. Symbiosis

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

Coral reefs are known for their exceptional biodiversity, supporting a wide variety of marine life.

Multiple choice

Which of the following is an example of a trade-off between ecosystem services?

  1. Converting forests to agriculture can increase food production but reduce carbon sequestration

  2. Building dams can generate hydropower but disrupt fish migration

  3. Developing coastal areas can increase tourism revenue but degrade marine ecosystems

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

All of the options mentioned are examples of trade-offs between ecosystem services. Converting forests to agriculture can increase food production but reduce carbon sequestration, building dams can generate hydropower but disrupt fish migration, and developing coastal areas can increase tourism revenue but degrade marine ecosystems. These trade-offs need to be carefully considered when making decisions about land use and resource management.

Multiple choice

What is the concept of ecosystem services cascade?

  1. The sequence of ecosystem services that are linked to each other

  2. The cumulative impact of multiple ecosystem services on human well-being

  3. The spatial distribution of ecosystem services across a landscape

  4. The economic value of ecosystem services
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A Correct answer
Explanation

The ecosystem services cascade refers to the sequence of ecosystem services that are linked to each other, where the output of one service becomes the input for another. For example, the provision of clean water by forests (filtration and purification) supports the downstream service of water supply for human consumption.

Multiple choice

What is the term for the diverse array of organisms that inhabit coral reefs?

  1. Coral reef biodiversity

  2. Coral reef community

  3. Coral reef ecosystem

  4. Coral reef biota
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Coral reef biodiversity, coral reef community, coral reef ecosystem, and coral reef biota all refer to the diverse array of organisms that inhabit coral reefs, including fish, invertebrates, algae, and other marine life.

Multiple choice

What is the term used to describe the interconnectedness and interdependence of species within an ecosystem?

  1. Biodiversity

  2. Symbiosis

  3. Food Web

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

Ecological balance refers to the interconnectedness and interdependence of species within an ecosystem, where the interactions between organisms maintain a stable and functioning system.

Multiple choice

Ecological Footprint measures the:

  1. Total area of land and water required to support a population

  2. Amount of energy consumed by a household

  3. Volume of waste generated by an industry

  4. Number of species threatened by a development project
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecological Footprint calculates the total area of land and water required to sustain a population, considering factors such as food production, housing, energy consumption, and waste disposal.

Multiple choice

The concept of 'river continuum' emphasizes the:

  1. Interconnectedness of river ecosystems from headwaters to mouth

  2. Importance of maintaining natural flow regimes in rivers

  3. Role of rivers in transporting nutrients and sediments

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

The river continuum concept encompasses the interconnectedness of river ecosystems, the significance of natural flow regimes, and the role of rivers in nutrient and sediment transport.

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

Biodiversity encompasses the variety of life on Earth, including the different species of plants, animals, and microorganisms, as well as the ecosystems in which they live.

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 is not a major type of biodiversity. Species Diversity, Ecosystem Diversity, and Genetic Diversity are the major types of biodiversity.