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Primary Production and Productivity

Description: This quiz covers the concepts of primary production and productivity in ecosystems.
Number of Questions: 15
Created by:
Tags: ecology primary production productivity
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What is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?

  1. Photosynthesis

  2. Cellular respiration

  3. Chemosynthesis

  4. Decomposition

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Correct Option: A
Explanation:

Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

What is the term used to describe the rate at which organic matter is produced by plants in an ecosystem?

  1. Primary production

  2. Secondary production

  3. Net primary production

  4. Gross primary production

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Correct Option: D
Explanation:

Gross primary production is the rate at which organic matter is produced by plants in an ecosystem.

What is the difference between gross primary production and net primary production?

  1. Gross primary production includes the organic matter used by plants for respiration, while net primary production does not.

  2. Gross primary production includes the organic matter lost to herbivores, while net primary production does not.

  3. Gross primary production includes the organic matter lost to decomposition, while net primary production does not.

  4. Gross primary production includes all of the above, while net primary production does not.

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Correct Option: A
Explanation:

Gross primary production includes the organic matter used by plants for respiration, while net primary production does not.

What is the term used to describe the rate at which organic matter is produced by consumers in an ecosystem?

  1. Primary production

  2. Secondary production

  3. Net primary production

  4. Gross primary production

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Correct Option: B
Explanation:

Secondary production is the rate at which organic matter is produced by consumers in an ecosystem.

What is the relationship between primary production and secondary production?

  1. Primary production is the foundation of secondary production.

  2. Secondary production is the foundation of primary production.

  3. Primary production and secondary production are independent of each other.

  4. Primary production and secondary production are inversely related.

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Correct Option: A
Explanation:

Primary production is the foundation of secondary production, as consumers rely on plants for food.

What are the factors that affect primary production in an ecosystem?

  1. Sunlight

  2. Water

  3. Carbon dioxide

  4. Temperature

  5. All of the above

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Correct Option: E
Explanation:

All of the above factors affect primary production in an ecosystem.

What are the factors that affect secondary production in an ecosystem?

  1. Primary production

  2. Predation

  3. Competition

  4. Disease

  5. All of the above

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Correct Option: E
Explanation:

All of the above factors affect secondary production in an ecosystem.

What is the importance of primary production in an ecosystem?

  1. It provides food for consumers.

  2. It produces oxygen.

  3. It helps to regulate the climate.

  4. It provides habitat for wildlife.

  5. All of the above

Show answer
Correct Option: E
Explanation:

All of the above are importance of primary production in an ecosystem.

What is the importance of secondary production in an ecosystem?

  1. It provides food for tertiary consumers.

  2. It helps to control populations of primary consumers.

  3. It helps to recycle nutrients.

  4. It helps to maintain biodiversity.

  5. All of the above

Show answer
Correct Option: E
Explanation:

All of the above are importance of secondary production in an ecosystem.

What are some of the human activities that can affect primary production and productivity?

  1. Deforestation

  2. Pollution

  3. Climate change

  4. Overfishing

  5. All of the above

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Correct Option: E
Explanation:

All of the above human activities can affect primary production and productivity.

What are some of the ways that we can protect and enhance primary production and productivity?

  1. Reduce deforestation

  2. Reduce pollution

  3. Mitigate climate change

  4. Sustainable fishing practices

  5. All of the above

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Correct Option: E
Explanation:

All of the above ways can help to protect and enhance primary production and productivity.

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

  1. Energy flow

  2. Food chain

  3. Food web

  4. Trophic cascade

  5. All of the above

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Correct Option: E
Explanation:

All of the above terms are used to describe the transfer of energy from one trophic level to the next.

What is a trophic level?

  1. A group of organisms that occupy the same position in a food chain or food web.

  2. A group of organisms that have the same diet.

  3. A group of organisms that live in the same habitat.

  4. A group of organisms that have the same predators.

  5. None of the above

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Correct Option: A
Explanation:

A trophic level is a group of organisms that occupy the same position in a food chain or food web.

What is the term used to describe the process by which energy is lost as it moves from one trophic level to the next?

  1. Energy transfer efficiency

  2. Ecological efficiency

  3. Trophic level transfer efficiency

  4. All of the above

  5. None of the above

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Correct Option: C
Explanation:

Trophic level transfer efficiency is the term used to describe the process by which energy is lost as it moves from one trophic level to the next.

What is the typical energy transfer efficiency from one trophic level to the next?

  1. 10%

  2. 20%

  3. 30%

  4. 40%

  5. 50%

Show answer
Correct Option: A
Explanation:

The typical energy transfer efficiency from one trophic level to the next is 10%.

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