Community Ecology Chapter 4
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Questions and Answers

What happens to the fitness of an individual that is exploited in an exploitation interaction?

  • It increases
  • It decreases (correct)
  • It becomes neutral
  • It remains the same

    • What is the result of realized niche being smaller than fundamental niche?

  • Increased competition (correct)
  • Decreased competition
  • Lack of resources
  • Species extinction

    • What type of interaction is characterized by killing and consuming other organisms?

  • Commensalism
  • Symbiosis
  • Exploitation (correct)
  • Mutualism

    • What is the effect of exploitation on the fitness of the exploiter?

    <p>It increases</p> Signup and view all the answers

    What is the relationship between fundamental niche and realized niche?

    <p>Fundamental niche is larger than realized niche</p> Signup and view all the answers

    What happens when the egg hatches?

    <p>The parasitoid larva feeds on the host's tissues.</p> Signup and view all the answers

    How does the parasitoid larva affect the host?

    <p>It gradually kills the host.</p> Signup and view all the answers

    What is the relationship between the parasitoid larva and the host?

    <p>The parasitoid larva is a parasite that kills the host.</p> Signup and view all the answers

    What is the end result of the parasitoid larva's feeding?

    <p>The host dies.</p> Signup and view all the answers

    What is the role of the parasitoid larva in the ecosystem?

    <p>It is a predator that kills the host.</p> Signup and view all the answers

    What is the primary focus of genetic diversity in the context of biodiversity?

    <p>Variation within a population and between populations</p> Signup and view all the answers

    Which of the following approaches is associated with genetic diversity?

    <p>Biotechnological approach</p> Signup and view all the answers

    What is the level of organization that genetic diversity is primarily concerned with?

    <p>Population</p> Signup and view all the answers

    What is the primary unit of genetic diversity?

    <p>Population</p> Signup and view all the answers

    Which of the following is NOT a component of biodiversity?

    <p>Climate diversity</p> Signup and view all the answers

    What is the primary role of trophic levels in an ecosystem?

    <p>To determine how organisms obtain energy</p> Signup and view all the answers

    What is the typical number of trophic levels found in most ecosystems?

    <p>3-5</p> Signup and view all the answers

    What is a key characteristic of the environment where primary succession begins?

    <p>Absence of soil</p> Signup and view all the answers

    What is a crucial step in primary succession?

    <p>Formation of soil</p> Signup and view all the answers

    Which of the following is NOT a function of trophic levels?

    <p>Water cycling</p> Signup and view all the answers

    What is the relationship between organisms at different trophic levels?

    <p>Predator-prey relationship</p> Signup and view all the answers

    What type of succession occurs where soil is already present?

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

    Why are trophic levels important in understanding community dynamics?

    <p>They influence the energy flow</p> Signup and view all the answers

    What is the opposite of primary succession?

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

    What is a common location where primary succession occurs?

    <p>Rocks or sand dunes</p> Signup and view all the answers

    Study Notes

    Niche

    • Realized niche: smaller than fundamental niche due to competition

    Interaction Types

    • Exploitation: interaction between populations that enhances fitness of one individual while reducing fitness of the exploited individual (+/-)
    • Characteristics of exploitation:
      • Involves killing and consuming other organisms
      • Example: parasitoid larva feeding on host's tissues, gradually killing it

    Biodiversity Components

    • Three main components of biodiversity:
      • Genetic diversity: genetic variation within a population and between populations
      • (Biotechnological approach not specified)
      • Other two components not mentioned

    Community Dynamics

    • Key factor in community dynamics: biodiversity
    • Importance of trophic levels:
      • How organisms get their energy
      • Typically 3-5 trophic levels in most ecosystems

    Primary Succession

    • Occurs where no soil exists at the start
    • Formation of soil is a major step in primary succession

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    Description

    This quiz covers the concepts of niche, exploitation, and interactions between populations in community ecology. It includes the fundamental niche of a species and the impact of competition.

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