Environmental Studies · 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

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

  1. Biodiversity.

  2. Ecosystem services.

  3. Ecological niche.

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

A food web is a complex network of interconnected food chains, representing the feeding relationships between different species in an ecosystem, highlighting their interdependence.

Multiple choice

Which of the following is an example of an ecosystem service provided by nature?

  1. Clean air and water.

  2. Pollination of crops.

  3. Regulation of climate.

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

Ecosystem services are the benefits that humans derive from the natural environment, including clean air and water, pollination of crops, regulation of climate, and many others.

Multiple choice

What is functional diversity?

  1. The variety of species in an ecosystem

  2. The variety of traits that species possess

  3. The variety of ways in which species interact with each other

  4. The variety of ways in which species use resources
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Functional diversity refers to the variety of traits that species possess, which can influence their roles and interactions within an ecosystem.

Multiple choice

Which of the following is not an example of an ecosystem service?

  1. Pollination

  2. Climate regulation

  3. Water purification

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

Food production is not an ecosystem service, as it is a direct product of human activity rather than a natural process.

Multiple choice

Which of the following is not a factor that can influence functional diversity?

  1. Climate

  2. Habitat structure

  3. Species interactions

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

Climate is not a factor that can influence functional diversity, as it is a global phenomenon that affects all ecosystems equally.

Multiple choice

What is the relationship between functional diversity and ecosystem services?

  1. Functional diversity is a prerequisite for ecosystem services

  2. Ecosystem services are a prerequisite for functional diversity

  3. Functional diversity and ecosystem services are independent of each other

  4. There is no relationship between functional diversity and ecosystem services
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Functional diversity is a prerequisite for ecosystem services, as the variety of traits that species possess enables them to perform a wide range of functions that contribute to ecosystem functioning.

Multiple choice

How can functional diversity be measured?

  1. By calculating the number of species in an ecosystem

  2. By measuring the abundance of each species in an ecosystem

  3. By calculating the diversity of functional traits in an ecosystem

  4. By measuring the interactions between species in an ecosystem
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Functional diversity can be measured by calculating the diversity of functional traits in an ecosystem, as this provides a quantitative assessment of the variety of roles that species play.

Multiple choice

Which of the following is not a factor that can affect the functional diversity of an ecosystem?

  1. Climate

  2. Habitat structure

  3. Species interactions

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

Pollution is not a factor that can affect the functional diversity of an ecosystem, as it is a human-made phenomenon that does not directly influence the variety of traits that species possess.

Multiple choice

Which of the following is not an example of a functional diversity metric?

  1. Functional richness

  2. Functional evenness

  3. Functional divergence

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

Species richness is not a functional diversity metric, as it does not take into account the variety of traits that species possess.

Multiple choice

Which of the following species is most likely to be negatively affected by habitat fragmentation?

  1. Generalist species with high dispersal能力

  2. Specialist species with low dispersal能力

  3. Edge-adapted species

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

Specialist species with low dispersal能力 are more vulnerable to habitat fragmentation because they are less able to move between habitat patches and adapt to changing environmental conditions.

Multiple choice

What is the term used to describe the minimum amount of habitat required for a population to persist in a fragmented landscape?

  1. Minimum viable population size

  2. Carrying capacity

  3. Habitat threshold

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

Habitat threshold refers to the minimum amount of habitat required for a population to persist in a fragmented landscape, below which the population is at risk of extinction.

Multiple choice

What is the term used to describe the changes in species composition and abundance that occur at the edges of habitat fragments?

  1. Edge effect

  2. Fragmentation effect

  3. Isolation effect

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

Edge effect refers to the changes in species composition and abundance that occur at the edges of habitat fragments, where environmental conditions differ from those in the interior of the fragment.

Multiple choice

Which of the following is a key principle of permaculture?

  1. Diversity

  2. Interconnectedness

  3. Feedback loops

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

Diversity, interconnectedness, and feedback loops are all key principles of permaculture. Diversity refers to the variety of plants and animals in a system. Interconnectedness refers to the way that different elements of a system are connected and interact with each other. Feedback loops refer to the way that information flows through a system and is used to make adjustments.

Multiple choice

What is the term for a permaculture design that creates a self-sustaining ecosystem in a small space?

  1. Food forest

  2. Keyhole garden

  3. Hugelkultur

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

Food forest, keyhole garden, and hugelkultur are all permaculture designs that create self-sustaining ecosystems in small spaces. Food forests are designed to mimic the natural patterns of a forest ecosystem, and they can provide a variety of food, shelter, and other resources for humans and other organisms. Keyhole gardens are small, circular gardens that are easy to maintain and can be used to grow a variety of vegetables and herbs. Hugelkultur is a method of creating raised beds using logs and other organic materials.

Multiple choice

What is the term for a permaculture design that creates a sustainable food system?

  1. Food forest

  2. Keyhole garden

  3. Hugelkultur

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

Food forest, keyhole garden, and hugelkultur are all permaculture designs that create sustainable food systems. Food forests are designed to mimic the natural patterns of a forest ecosystem, and they can provide a variety of food, shelter, and other resources for humans and other organisms. Keyhole gardens are small, circular gardens that are easy to maintain and can be used to grow a variety of vegetables and herbs. Hugelkultur is a method of creating raised beds using logs and other organic materials.