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 key component of a balanced ecosystem?

  1. Producers

  2. Consumers

  3. Decomposers

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

Abiotic factors are non-living components of an ecosystem, such as temperature, water, and soil, which influence the survival and distribution of organisms, but they are not considered living components of the ecosystem.

Multiple choice

What is the term used to describe the maximum population size of a species that an ecosystem can support?

  1. Ecological balance

  2. Carrying capacity

  3. Population density

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

Carrying capacity is the maximum population size of a species that an ecosystem can support without experiencing degradation or collapse.

Multiple choice

What is the term used to describe the process by which energy flows through an ecosystem?

  1. Energy flow

  2. Trophic levels

  3. Food webs

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

Energy flow is the process by which energy is transferred from one organism to another through a food chain or food web.

Multiple choice

Which marine ecosystem is characterized by a high diversity of plant and animal life, often forming intricate food webs?

  1. Coral Reefs

  2. Estuaries

  3. Mangroves

  4. Open Ocean
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 organisms and forming complex food webs.

Multiple choice

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

  1. Food

  2. Fiber

  3. Water

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

Climate regulation is a regulating service provided by ecosystems, not a provisioning service.

Multiple choice

What is the main factor that determines the amount of food that an ecosystem can produce?

  1. Climate

  2. Soil fertility

  3. Water availability

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

All of the above factors play a role in determining the amount of food that an ecosystem can produce.

Multiple choice

What is the term used to describe a group of subpopulations that are connected by occasional migration?

  1. Metapopulation

  2. Population

  3. Community

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

A metapopulation is a group of subpopulations that are connected by occasional migration, allowing for genetic exchange and recolonization of patches.

Multiple choice

What is the term used to describe the variety of life on Earth, including the diversity of species, ecosystems, and genetic variation?

  1. Biodiversity

  2. Ecosystem services

  3. Conservation biology

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

Biodiversity encompasses the variety of life forms on Earth, including the diversity of species, ecosystems, and genetic variation.

Multiple choice

Which of the following is NOT an example of an ecosystem service provided by biodiversity?

  1. Pollination of crops

  2. Water purification

  3. Climate regulation

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

Food production is not directly an ecosystem service provided by biodiversity, although biodiversity can contribute to food security through the provision of genetic resources for agriculture.

Multiple choice

What are supporting services in the context of ecosystem services?

  1. Services that directly benefit human well-being

  2. Services that indirectly benefit human well-being

  3. Services that are essential for the functioning of ecosystems

  4. Services that are provided by humans to ecosystems
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Supporting services are ecosystem services that indirectly benefit human well-being by supporting the production of other ecosystem services, such as provisioning, regulating, and cultural services.

Multiple choice

What is functional diversity?

  1. The variety of traits and functions performed by organisms in an ecosystem.

  2. The number of different species in an ecosystem.

  3. The genetic diversity within a population.

  4. The physical structure of an ecosystem.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Functional diversity refers to the variety of roles and functions that different species play in an ecosystem, such as pollination, seed dispersal, and nutrient cycling.

Multiple choice

What is the relationship between functional diversity and ecosystem functioning?

  1. Functional diversity has a positive effect on ecosystem functioning.

  2. Functional diversity has a negative effect on ecosystem functioning.

  3. Functional diversity has no effect on ecosystem functioning.

  4. The relationship between functional diversity and ecosystem functioning is unclear.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Functional diversity has been shown to have a positive effect on ecosystem functioning, such as increased productivity, stability, and resilience.

Multiple choice

How can functional diversity be measured?

  1. By measuring the number of different species in an area.

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

  3. By measuring the traits of each species in an area.

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

Functional diversity can be measured by measuring the traits of each species in an area, such as body size, diet, and habitat preference.

Multiple choice

What is the difference between functional diversity and species diversity?

  1. Functional diversity is a measure of the variety of traits and functions performed by organisms in an ecosystem, while species diversity is a measure of the number of different species in an ecosystem.

  2. Functional diversity is a measure of the number of different species in an ecosystem, while species diversity is a measure of the variety of traits and functions performed by organisms in an ecosystem.

  3. Functional diversity and species diversity are the same thing.

  4. Functional diversity is a measure of the abundance of each species in an ecosystem, while species diversity is a measure of the number of different species in an ecosystem.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Functional diversity and species diversity are two different measures of biodiversity. Functional diversity focuses on the variety of roles and functions that different species play in an ecosystem, while species diversity simply counts the number of different species.

Multiple choice

Why is functional diversity important for ecosystem functioning?

  1. Functional diversity increases the efficiency of resource use in an ecosystem.

  2. Functional diversity increases the stability of an ecosystem.

  3. Functional diversity increases the resilience of an ecosystem.

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

Functional diversity is important for ecosystem functioning because it increases the efficiency of resource use, the stability of an ecosystem, and the resilience of an ecosystem.