Ecological Succession
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Questions and Answers

What is the main benefit of the remaining layer of topsoil in secondary succession?

  • Delays plant establishment
  • Increases competition for resources
  • Prevents rapid recovery of the ecosystem
  • Provides nutrients and moisture for plant growth (correct)
  • Why do plants that grow shortly after a wildfire in chaparral ecosystems have adaptations?

  • To attract more animals for pollination
  • To prevent wildfires from occurring
  • To ensure longevity without reproduction
  • To withstand extreme temperatures (correct)
  • In climax succession, what characterizes the climax phase of ecological succession?

  • Rapid shifts in species composition
  • Invasive species dominance
  • Stable species composition (correct)
  • Complete ecosystem resource depletion
  • What enables plants in chaparral ecosystems to survive when the upper part of the plant burns away?

    <p>Underground roots that spread deep into the soil</p> Signup and view all the answers

    Why are small changes in species composition possible in climax communities?

    <p>Caused by natural events like tree deaths</p> Signup and view all the answers

    Which adaptation allows chaparral plants to quickly recover post-fire?

    <p>Seed pods opening with fire exposure</p> Signup and view all the answers

    What is the advantage of a remaining layer of topsoil in secondary succession for plant species?

    <p>It provides nutrients and moisture, reducing competition for resources.</p> Signup and view all the answers

    What key factor enables plants in chaparral ecosystems to survive when the upper part of the plant is burned away?

    <p>Extensive root systems that reach deep into the ground.</p> Signup and view all the answers

    What term describes plants that grow shortly after a wildfire in chaparral ecosystems?

    <p>Fire followers</p> Signup and view all the answers

    Which characteristic defines the climax phase of ecological succession?

    <p>Stable species composition and equilibrium in the ecosystem.</p> Signup and view all the answers

    What adaptation allows many chaparral plants to reseed quickly after a fire?

    <p>Seed pods that open due to fire exposure.</p> Signup and view all the answers

    Why are small changes in species composition possible in climax communities?

    <p>Due to natural events like tree fall causing temporary changes.</p> Signup and view all the answers

    What allows certain plant types to dominate the landscape during the climax phase of ecological succession?

    <p>Efficient use of resources within the ecosystem.</p> Signup and view all the answers

    How do plants in chaparral ecosystems adapt to the environmental conditions they face?

    <p>Through seeds that require fire exposure to germinate.</p> Signup and view all the answers

    What causes shifts in plant communities in climax succession over time?

    <p>Diseases introduced to the ecosystem</p> Signup and view all the answers

    Why does greater nutrient availability contribute to less competition for resources during early colonization?

    <p>More nutrients lead to faster plant growth and resource utilization.</p> Signup and view all the answers

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