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 variety of life on Earth, including the diversity of species, genes, and ecosystems?

  1. Biodiversity

  2. Ecosystem Health

  3. Conservation Biology

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

Biodiversity encompasses the variety of life on Earth at all levels, from genes to species to ecosystems.

Multiple choice

What is the term used to describe the variety of living organisms in a forest?

  1. Forest diversity

  2. Forest heterogeneity

  3. Forest biodiversity

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

Forest biodiversity refers to the variety of living organisms found in a forest, including plants, animals, fungi, and microorganisms.

Multiple choice

What are provisioning services in the context of ecosystem services?

  1. Services that provide food, water, and raw materials for human use

  2. Services that regulate climate and air quality

  3. Services that support biodiversity and habitat conservation

  4. Services that provide cultural and recreational benefits
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Provisioning services are those ecosystem services that directly provide tangible goods or resources for human consumption or use, such as food, water, timber, and fiber.

Multiple choice

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

  1. Food (crops, livestock)

  2. Water (drinking, irrigation)

  3. Timber (for construction, furniture)

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

Carbon sequestration is a regulating service provided by ecosystems, as it involves the removal of carbon dioxide from the atmosphere and its storage in terrestrial or marine ecosystems.

Multiple choice

What is the term used to describe the ability of an ecosystem to maintain its structure and function over time?

  1. Resilience

  2. Stability

  3. Equilibrium

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

Resilience, stability, and equilibrium are all terms used to describe the ability of an ecosystem to maintain its structure and function over time.

Multiple choice

Which of the following is NOT a principle of landscape architecture?

  1. Unity

  2. Variety

  3. Balance

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

Sustainability is not a principle of landscape architecture, but rather a goal that landscape architects strive to achieve.

Multiple choice

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

  1. Producers

  2. Consumers

  3. Decomposers

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

Abiotic factors, such as temperature, moisture, and pH, are not living components of an ecosystem but influence the interactions and survival of organisms.

Multiple choice

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

  1. Food chain

  2. Food web

  3. Trophic cascade

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

A trophic cascade is the transfer of energy and nutrients from one trophic level to the next, with each level representing a different group of organisms.

Multiple choice

Which of the following is an example of a positive feedback loop in an ecosystem?

  1. Increased plant growth due to increased carbon dioxide levels

  2. Decreased predator populations due to increased prey populations

  3. Increased decomposition rates due to increased temperature

  4. Decreased water availability due to increased drought
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Increased plant growth due to increased carbon dioxide levels is an example of a positive feedback loop, where the initial change (increased carbon dioxide) leads to a reinforcing effect (increased plant growth).

Multiple choice

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

  1. Ecological succession

  2. Biogeochemical cycling

  3. Trophic cascade

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

Ecological succession is the process by which ecosystems change over time, as species composition and community structure adapt to changing environmental conditions.

Multiple choice

Which of the following is NOT a type of ecosystem service?

  1. Water purification

  2. Climate regulation

  3. Food production

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

Pollution absorption is not a recognized ecosystem service. Ecosystems provide services such as water purification, climate regulation, and food production.

Multiple choice

Which of the following is an example of a limiting factor in an ecosystem?

  1. Sunlight

  2. Water

  3. Temperature

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

Sunlight, water, and temperature can all be limiting factors in an ecosystem, depending on the specific needs of the organisms present.

Multiple choice

What is the term used to describe the various benefits that humans obtain from ecosystems?

  1. Ecosystem Services

  2. Natural Resources

  3. Biodiversity Values

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

Ecosystem services encompass the wide range of benefits that humans derive from the functioning of natural ecosystems.

Multiple choice

Which of the following is NOT considered an ecosystem service?

  1. Water purification

  2. Climate regulation

  3. Food production

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

Mineral extraction, while valuable, is not considered an ecosystem service as it does not directly stem from the natural functioning of ecosystems.

Multiple choice

Which ecosystem service is crucial for regulating the Earth's temperature?

  1. Carbon sequestration

  2. Water cycling

  3. Nutrient cycling

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

Carbon sequestration, primarily through photosynthesis in forests and oceans, plays a vital role in regulating the Earth's temperature by absorbing carbon dioxide from the atmosphere.