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The Balance of Ecosystems

Description: This quiz is designed to test your understanding of the concept of the balance of ecosystems, including the interactions between organisms and their environment.
Number of Questions: 15
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Tags: ecology ecosystems balance of nature
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What is the term used to describe the dynamic equilibrium that exists in a healthy ecosystem?

  1. Ecological balance

  2. Homeostasis

  3. Carrying capacity

  4. Trophic cascade


Correct Option: A
Explanation:

Ecological balance refers to the state of equilibrium in which the populations of different species in an ecosystem are relatively stable and the ecosystem functions properly.

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

  1. Producers

  2. Consumers

  3. Decomposers

  4. Abiotic factors


Correct Option: D
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.

What is the term used to describe the transfer of energy and nutrients from one organism to another through a food chain?

  1. Trophic levels

  2. Ecological pyramids

  3. Food webs

  4. Energy flow


Correct Option: C
Explanation:

Food webs are complex networks of interconnected food chains, showing how energy and nutrients flow through an ecosystem.

Which of the following is NOT a type of trophic level in an ecosystem?

  1. Producers

  2. Primary consumers

  3. Secondary consumers

  4. Apex predators


Correct Option: D
Explanation:

Apex predators are not a trophic level, but rather a type of organism that occupies the highest trophic level in a food chain, with no natural predators.

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


Correct Option: B
Explanation:

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

Which of the following is NOT a factor that can affect the carrying capacity of an ecosystem?

  1. Availability of resources

  2. Competition between species

  3. Predation

  4. Climate change


Correct Option: D
Explanation:

Climate change is not a direct factor that affects the carrying capacity of an ecosystem, although it can indirectly impact carrying capacity by altering resource availability and species interactions.

What is the term used to describe the process by which ecosystems recover from disturbances?

  1. Resilience

  2. Succession

  3. Equilibrium

  4. Homeostasis


Correct Option: A
Explanation:

Resilience is the ability of an ecosystem to recover from disturbances and maintain its structure and function.

Which of the following is NOT an example of a disturbance that can affect an ecosystem?

  1. Natural disasters

  2. Human activities

  3. Climate change

  4. Ecological balance


Correct Option: D
Explanation:

Ecological balance is not a disturbance, but rather a state of equilibrium in an ecosystem.

What is the term used to describe the process by which one species influences the population size of another species?

  1. Interspecific competition

  2. Predation

  3. Mutualism

  4. Parasitism


Correct Option: A
Explanation:

Interspecific competition is the process by which two or more species compete for the same resources, such as food, water, or territory.

Which of the following is NOT an example of a mutualistic relationship between species?

  1. Pollination of plants by insects

  2. Dispersal of seeds by animals

  3. Decomposition of organic matter by fungi

  4. Competition between predators and prey


Correct Option: D
Explanation:

Competition between predators and prey is not a mutualistic relationship, but rather an antagonistic relationship.

What is the term used to describe the process by which nutrients are recycled within an ecosystem?

  1. Nutrient cycling

  2. Decomposition

  3. Trophic cascades

  4. Ecological pyramids


Correct Option: A
Explanation:

Nutrient cycling is the process by which nutrients are transferred from one organism to another and back to the environment.

Which of the following is NOT a key role of decomposers in an ecosystem?

  1. Breaking down organic matter

  2. Releasing nutrients into the environment

  3. Producing oxygen

  4. Consuming primary producers


Correct Option: C
Explanation:

Decomposers do not produce oxygen, but rather consume oxygen during the decomposition process.

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


Correct Option: A
Explanation:

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

Which of the following is NOT a consequence of human activities that can disrupt the balance of ecosystems?

  1. Pollution

  2. Habitat destruction

  3. Invasive species introduction

  4. Natural disasters


Correct Option: D
Explanation:

Natural disasters are not a consequence of human activities, although they can impact ecosystems.

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

  1. Ecological succession

  2. Evolution

  3. Adaptation

  4. Homeostasis


Correct Option: A
Explanation:

Ecological succession is the process by which ecosystems change over time in response to disturbances or changes in environmental conditions.

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