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. Soil Formation

  2. Nutrient Cycling

  3. Biodiversity

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

Pollination is a regulating service provided by ecosystems, while soil formation, nutrient cycling, and biodiversity are all supporting services.

Multiple choice

The cycling of nutrients between living organisms and the environment is known as:

  1. Nutrient Cycling

  2. Biogeochemical Cycling

  3. Ecological Cycling

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

Nutrient cycling, biogeochemical cycling, and ecological cycling all refer to the same process: the movement of nutrients between living organisms and the environment.

Multiple choice

Biodiversity refers to the:

  1. Variety of life on Earth

  2. Number of different species on Earth

  3. Genetic diversity within a species

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

Biodiversity encompasses the variety of life on Earth, the number of different species, and the genetic diversity within a species.

Multiple choice

Which of the following is NOT a type of biodiversity?

  1. Species Diversity

  2. Genetic Diversity

  3. Ecosystem Diversity

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

Ecosystem diversity is not a type of biodiversity, but rather a measure of the variety of ecosystems in a given area.

Multiple choice

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

  1. Soil Formation

  2. Nutrient Cycling

  3. Pollination

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

Climate regulation is a regulating service provided by biodiversity, while soil formation, nutrient cycling, and pollination are all supporting services.

Multiple choice

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

  1. Soil Formation

  2. Nutrient Cycling

  3. Biodiversity

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

Water purification is a regulating service provided by ecosystems, while soil formation, nutrient cycling, and biodiversity are all supporting services.

Multiple choice

Which of the following is NOT an ecosystem service?

  1. Carbon sequestration

  2. Water filtration

  3. Pollination

  4. Fossil fuel extraction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fossil fuel extraction is not an ecosystem service because it does not provide any benefit to humans or the environment.

Multiple choice

How do ecosystems contribute to carbon sequestration?

  1. Through photosynthesis

  2. Through decomposition

  3. Through respiration

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

Ecosystems contribute to carbon sequestration primarily through photosynthesis, the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Multiple choice

Deep ecology advocates for a radical change in our relationship with nature, emphasizing the need to:

  1. Control and dominate nature

  2. Live in harmony with nature

  3. Exploit nature for economic gain

  4. Ignore nature's intrinsic value
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deep ecology advocates for a radical change in our relationship with nature, emphasizing the need to live in harmony with nature.

Multiple choice

The concept of ecological footprint measures the impact of human activities on the environment. Which of the following is NOT a component of the ecological footprint?

  1. Carbon footprint

  2. Water footprint

  3. Land footprint

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

Economic footprint is not a component of the ecological footprint, which measures the impact of human activities on the environment in terms of the amount of land, water, and energy required to sustain those activities.

Multiple choice

The concept of carrying capacity refers to the maximum population size that an environment can sustain without degrading its resources. Which of the following is NOT a factor that determines the carrying capacity of an environment?

  1. Availability of resources

  2. Pollution levels

  3. Technological advancements

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

Cultural values are not a factor that determines the carrying capacity of an environment, which is primarily determined by the availability of resources, pollution levels, and technological advancements.

Multiple choice

The concept of planetary boundaries defines the safe operating space for humanity within which we can avoid irreversible environmental damage. Which of the following is NOT a planetary boundary?

  1. Climate change

  2. Biodiversity loss

  3. Nitrogen and phosphorus pollution

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

Economic growth is not a planetary boundary, as it is not a biophysical limit that can be exceeded without causing irreversible environmental damage.

Multiple choice

How do dams affect the migration of fish?

  1. They facilitate fish migration.

  2. They hinder fish migration.

  3. They have no effect on fish migration.

  4. The effect depends on the specific dam.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dams can block the migration of fish, preventing them from reaching their spawning grounds.

Multiple choice

The concept of the ecological footprint refers to:

  1. The amount of land and water required to produce the goods and services that a person consumes

  2. The amount of waste that a person produces

  3. The amount of energy that a person uses

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

The ecological footprint refers to the amount of land and water required to produce the goods and services that a person consumes, the amount of waste that a person produces, and the amount of energy that a person uses.

Multiple choice

How do riparian zones contribute to the cycling of nutrients in an ecosystem?

  1. By absorbing nutrients from water

  2. By releasing nutrients into the soil

  3. By providing habitat for decomposers

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

Riparian zones contribute to nutrient cycling by absorbing nutrients from water, releasing nutrients into the soil, and providing habitat for decomposers.