Conservation of Biodiversity: Defense Strategies and Toxins
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Questions and Answers

Which species allow testing the role of epigenetic inheritance?

  • Oak tree, Maple tree, Pine tree
  • Sunflower, Daffodil, Rose
  • Fountain grass, Alligator weed, Japanese knotweed (correct)
  • Tulip, Lily, Orchid

    • What can environmental stress lead to in terms of heritable changes?

  • Changes in protein synthesis
  • Complete alteration of genetic code
  • No impact on DNA methylation
  • Inherited changes in DNA methylation (correct)

    • What is epigenetic inheritance?

  • The passing on of genetic material through DNA replication
  • The inheritance of physical traits acquired during an organism's lifetime
  • The process of increasing, reducing, or disabling the activity of particular genes (correct)
  • The random change in gene expression without any external influence

    • What are the two main categories of traits that contribute to plant defense in Arabidopsis thaliana?

    <p>Life-history traits and Morphology</p> Signup and view all the answers

    Which strategy involves plants being resistant to herbivores by producing substances that are poisonous or difficult to digest?

    <p>Antibiosis (poisoning)</p> Signup and view all the answers

    What is the evolutionary purpose of many seeding species having long intervals between flowering and dying?

    <p>To ensure that some seeds survive through predator satiation</p> Signup and view all the answers

    What is a characteristic of biochemical defenses used by plants against herbivores?

    <p>They are poisonous or difficult to digest</p> Signup and view all the answers

    What is the main advantage of toxins as a defense strategy for plants?

    <p>They are effective at low concentrations, making them cost-effective</p> Signup and view all the answers

    What is the difference between tolerance and resistance as defense strategies for plants?

    <p>Tolerance traits allow a plant to maintain high fitness despite damage by herbivores, while resistance traits reduce the damage done by herbivores</p> Signup and view all the answers

    Why is induced resistance not universal in plants?

    <p>Plants have a limited supply of defensive compounds that need to be concentrated in specific regions</p> Signup and view all the answers

    What kind of communication do plants engage in using volatile organic compounds (VOCs)?

    <p>Communication within the same plant, between plants of the same species, and between different species</p> Signup and view all the answers

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