Term 3-This is not everything!

What is primary succession?

• The process by which a community recovers after a disturbance

• The development of a community in an area that has never supported life before

• The gradual replacement of one community by another

• The maximum population size an environment can support

Answer explanation

The development of a community in an area that has never supported life before

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DOK Level 1: Recall

Which of the following is an example of a density-dependent factor?

• Natural disasters

• Disease

• Temperature

• Sunlight

Answer explanation

Disease is an example of a density-dependent factor because its impact on a population increases as the population density increases.

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DOK Level 1: Recall

What is carrying capacity?

• The number of individuals in a population

• The maximum population size an environment can support

• The rate at which a population grows

• The process of primary succession

Answer explanation

Carrying capacity refers to the maximum population size an environment can support, indicating the limit to which a population can grow sustainably.

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DOK Level 1: Recall

Which of the following best describes secondary succession?

• The development of a community in an area that has never supported life before

• The recovery of a community after a disturbance

• The gradual replacement of one community by another

• The maximum population size an environment can support

Answer explanation

Secondary succession refers to the recovery of a community after a disturbance, where new organisms gradually repopulate the area.

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DOK Level 1: Recall

Which of the following is an example of a density-independent factor?

• Competition for resources

• Predation

• Flood

• Disease

Answer explanation

The correct choice is Flood because it is an example of a density-independent factor, meaning it affects populations regardless of their size or density.

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DOK Level 1: Recall

Explain how primary succession differs from secondary succession.

• Primary succession occurs in lifeless areas, while secondary succession occurs in areas where a community has previously existed.

• Primary succession involves the gradual replacement of one community by another, while secondary succession does not.

• Primary succession is faster than secondary succession.

• Primary succession occurs after a disturbance, while secondary succession does not.

Answer explanation

Primary succession occurs in lifeless areas, while secondary succession occurs in areas where a community has previously existed.

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DOK Level 2: Skill/Concept

How do density-dependent factors affect population size?

• They increase population size regardless of the population density.

• They decrease population size regardless of the population density.

• They have a greater impact as the population density increases.

• They have a greater impact as the population density decreases.

Answer explanation

They have a greater impact as the population density increases.

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DOK Level 2: Skill/Concept

Describe the role of pioneer species in primary succession.

• They are the first species to colonize barren environments and begin the process of soil formation.

• They are the dominant species in a mature ecosystem.

• They are the species that appear after a disturbance in secondary succession.

• They are the species that compete for resources in a dense population.

Answer explanation

Pioneer species are the first to colonize barren environments, initiating soil formation in primary succession.

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DOK Level 2: Skill/Concept

How can carrying capacity be affected by changes in the environment?

• Carrying capacity remains constant regardless of environmental changes.

• Carrying capacity can increase or decrease depending on the availability of resources.

• Carrying capacity only decreases with environmental changes.

• Carrying capacity only increases with environmental changes.

Answer explanation

Carrying capacity can change based on the availability of resources, increasing or decreasing with environmental changes.

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DOK Level 2: Skill/Concept

Analyze the impact of a forest fire on the process of secondary succession.

• A forest fire initiates primary succession by creating a lifeless area.

• A forest fire initiates secondary succession by removing existing vegetation and allowing new species to colonize.

• A forest fire has no impact on succession processes.

• A forest fire prevents any form of succession from occurring.

Answer explanation

A forest fire initiates secondary succession by removing existing vegetation and allowing new species to colonize.

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DOK Level 3: Strategic Thinking