Ch 9: Community change over time (Succession)

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Questions and Answers

What is the gradual process of ecological change that occurs in an ecosystem over time until it reaches a stable and self-sustaining state known as a climax community?

  • Revolution
  • Mutation
  • Evolution
  • Succession (correct)

Which type of organisms are the first to colonize and inhabit a newly formed or disturbed area in the process of succession?

  • Mature Species
  • Pioneer Species (correct)
  • Extinct Species
  • Endangered Species

What is the final, stable community that is reached at the end of succession?

  • Climax Community (correct)
  • Initial Community
  • Pioneer Community
  • Transient Community

Where does primary succession occur?

<p>In a barren habitat (B)</p> Signup and view all the answers

Which type of succession begins with pioneer species?

<p>Primary Succession (A)</p> Signup and view all the answers

What role do pioneer species play in succession?

<p>Initiate the breakdown of rocks to form soil (A)</p> Signup and view all the answers

Which term is used to describe the process of regrowth or development following a disturbance in an existing ecosystem?

<p>Secondary Succession (A)</p> Signup and view all the answers

What is the role of lichens in the process of primary succession?

<p>Break down rocks to create soil (A)</p> Signup and view all the answers

Which plant group typically replaces the initial pioneers during primary succession?

<p>Shrubs (C)</p> Signup and view all the answers

What best describes the characteristic of a climax community?

<p>Stable and well-adapted to the environment (D)</p> Signup and view all the answers

In which type of succession does the process begin with a more developed soil base?

<p>Secondary succession (A)</p> Signup and view all the answers

What typically occurs at a faster rate in secondary succession compared to primary succession?

<p>Colonization of pioneer species (C)</p> Signup and view all the answers

Which vegetation types are generally the first to colonize during secondary succession?

<p>Grasses and shrubs (C)</p> Signup and view all the answers

During succession, what makes the environment more suitable for the next stage of development?

<p>Alterations by the preceding community (B)</p> Signup and view all the answers

What distinguishes secondary succession from primary succession in terms of habitat conditions?

<p>Pre-existing soil (B)</p> Signup and view all the answers

What is the key difference between primary and secondary succession?

<p>The presence of pioneer species (B)</p> Signup and view all the answers

What role do pioneer species play in primary succession?

<p>Facilitate the breakdown of rocks to form soil (B)</p> Signup and view all the answers

What defines a climax community in ecological succession?

<p>Dynamic equilibrium between species and environmental factors (B)</p> Signup and view all the answers

In which type of succession does secondary succession occur?

<p>Disturbed ecosystems with pre-existing soil (A)</p> Signup and view all the answers

What initiates the process of primary succession?

<p>Breakdown of rocks by pioneer species (D)</p> Signup and view all the answers

What is the primary difference in habitat between primary and secondary succession?

<p>Absence or presence of soil (C)</p> Signup and view all the answers

Which term describes the process of ecological change in an ecosystem until it reaches a stable community?

<p>Succession (A)</p> Signup and view all the answers

What is the role of lichens in primary succession?

<p>Accelerate the weathering of rocks (A)</p> Signup and view all the answers

What characterizes a climax community?

<p>Stable plant and animal species adapted to the environment (D)</p> Signup and view all the answers

In secondary succession, what facilitates the faster progression of community change?

<p>More competitive vegetation (D)</p> Signup and view all the answers

Which category of plants typically replaces the initial pioneers during primary succession?

<p>Shrubs and ferns (A)</p> Signup and view all the answers

What contributes to making an environment more suitable for the next stage of succession?

<p>Alterations made by the existing community (C)</p> Signup and view all the answers

What is the main factor that distinguishes secondary succession from primary succession?

<p>Presence of soil and seed bank (B)</p> Signup and view all the answers

At what pace does secondary succession typically progress compared to primary succession?

<p>It progresses faster (B)</p> Signup and view all the answers

What vegetation types are the first to colonize in a newly disturbed area during primary succession?

<p>Lichens and mosses (B)</p> Signup and view all the answers

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