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 population of a species exceeds the carrying capacity of its environment?

  1. Overpopulation

  2. Carrying capacity

  3. Environmental impact

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

Overpopulation is the point at which the population of a species exceeds the carrying capacity of its environment.

Multiple choice

What is the term used to describe the idea that the Earth has a finite capacity to support human life?

  1. Carrying capacity

  2. Environmental impact

  3. Population density

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

Carrying capacity is the idea that the Earth has a finite capacity to support human life.

Multiple choice

What is the habitable zone?

  1. The region around a star where liquid water can exist on the surface of a planet

  2. The region around a star where life can exist

  3. The region around a star where planets can form

  4. The region around a star where stars can form
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The habitable zone is the region around a star where liquid water can exist on the surface of a planet. This is a key factor for the potential for life to exist on a planet.

Multiple choice

Which of the following is NOT a type of microbial community?

  1. Biofilm

  2. Plankton

  3. Microbiome

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

Ecosystem is not a type of microbial community, but rather a larger ecological community that includes both living and non-living components.

Multiple choice

How does biodiversity contribute to carbon sequestration?

  1. It releases carbon dioxide into the atmosphere.

  2. It absorbs carbon dioxide from the atmosphere.

  3. It has no impact on carbon sequestration.

  4. It increases greenhouse gas emissions.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Biodiversity plays a crucial role in carbon sequestration. Plants, through photosynthesis, absorb carbon dioxide from the atmosphere and store it in their biomass. Forests, wetlands, and other ecosystems with high biodiversity act as carbon sinks, helping to regulate the global carbon cycle.

Multiple choice

Which of the following is NOT a key ecological role played by marine ecosystems?

  1. Providing food and shelter for marine organisms

  2. Regulating climate and weather patterns

  3. Producing oxygen through photosynthesis

  4. Decomposing organic matter and releasing nutrients
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While marine ecosystems play a crucial role in providing food, shelter, regulating climate, and producing oxygen, the decomposition of organic matter and release of nutrients is primarily carried out by terrestrial ecosystems.

Multiple choice

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

  1. Biodiversity

  2. Ecosystem

  3. Biosphere

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

Biodiversity encompasses the diversity of species, ecosystems, and genetic variation within species.

Multiple choice

What is the role of coral reefs in the global carbon cycle?

  1. They absorb carbon dioxide from the atmosphere

  2. They release carbon dioxide into the atmosphere

  3. They have no role in the carbon cycle

  4. They both absorb and release carbon dioxide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coral reefs play a role in the global carbon cycle by both absorbing and releasing carbon dioxide. They absorb carbon dioxide through photosynthesis and release it through respiration and the decomposition of organic matter.

Multiple choice

The term 'biome' refers to a:

  1. Large-scale community of plants and animals

  2. Specific type of ecosystem

  3. Group of organisms that share a common habitat

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

A biome is a large-scale community of plants and animals that share a common climate and soil type. It is a specific type of ecosystem and a group of organisms that share a common habitat.

Multiple choice

The term 'endemism' refers to:

  1. Species that are found only in a particular area

  2. Species that are found in many different areas

  3. Species that are threatened with extinction

  4. Species that are not found anywhere else on Earth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Endemism refers to species that are found only in a particular area.

Multiple choice

The term 'biodiversity' refers to:

  1. The variety of life on Earth

  2. The number of species on Earth

  3. The genetic diversity within a species

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

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

Multiple choice

Which of the following is a key indicator of a resilient wetland ecosystem?

  1. High levels of biodiversity

  2. Absence of human intervention

  3. Low levels of nutrient cycling

  4. Minimal water flow
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

High levels of biodiversity, including a diverse range of plant and animal species, contribute to the resilience of a wetland ecosystem by providing functional redundancy and enhancing the ecosystem's ability to adapt to changes and disturbances.

Multiple choice

What is the term for the ability of an ecosystem to withstand and recover from disturbances?

  1. Mitigation

  2. Adaptation

  3. Sustainability

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

Resilience is the ability of an ecosystem to withstand and recover from disturbances, such as natural disasters or human activities.

Multiple choice

What is the central principle of Deep Ecology?

  1. Humans are superior to other species.

  2. The natural world exists solely for human benefit.

  3. All living beings have intrinsic value.

  4. Economic growth is the ultimate goal of society.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Deep Ecology emphasizes the inherent worth of all living things, regardless of their usefulness to humans.

Multiple choice

What is the term used to describe the interconnectedness of all living things in Deep Ecology?

  1. Biocentrism

  2. Ecocentrism

  3. Anthropocentrism

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

Ecocentrism is the belief that all living things are interconnected and have intrinsic value.