Ecological Roles of Species
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Questions and Answers

What is a characteristic of keystone species?

  • They have a large effect on the ecosystem (correct)
  • They are invasive species
  • They are always apex predators
  • They are found only in aquatic ecosystems

    • What is an example of an indicator species?

  • A species of bee that pollinates flowers
  • A species of bird that migrates seasonally
  • A species of bat that helps to disperse seeds
  • A species of trout that indicates water quality (correct)

    • What role do keystone species play in an ecosystem?

  • They compete with other species for resources
  • They pollinate flowering plant species (correct)
  • They are a source of food for other species
  • They act as indicator species

    • What is a native species?

    <p>A species that normally lives and thrives in a particular ecosystem (A)</p> Signup and view all the answers

    What is a characteristic of nonnative species?

    <p>They are species that migrate into or are introduced into an ecosystem (B)</p> Signup and view all the answers

    What might happen to a keystone species that is vulnerable to extinction?

    <p>Its ecosystem will be severely impacted (D)</p> Signup and view all the answers

    What is an example of a foundation species that creates habitats for other species?

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

    What is a key role of keystone species in ecosystems?

    <p>Regulating populations of other species (D)</p> Signup and view all the answers

    What is the term used to describe the process of creating habitats and ecosystems through physical modifications?

    <p>Ecosystem engineering (D)</p> Signup and view all the answers

    How do some bat and bird species contribute to ecosystem engineering?

    <p>By depositing plant seeds in their droppings (D)</p> Signup and view all the answers

    What is a key difference between keystone species and foundation species?

    <p>Keystone species regulate populations, while foundation species create habitats (D)</p> Signup and view all the answers

    What is an example of a keystone species that helps regulate the populations of other species?

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

    What is the term used to describe the role a species plays in its ecosystem?

    <p>Ecological niche (D)</p> Signup and view all the answers

    What is the main difference between generalist and specialist species?

    <p>Niche breadth (D)</p> Signup and view all the answers

    What is a consequence of specialist species having narrow niches?

    <p>They are more prone to extinction (C)</p> Signup and view all the answers

    What is the term for the place where a species lives?

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

    Which of the following is an example of a generalist species?

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

    What determines how a species affects its ecosystem?

    <p>Its ecological niche (A)</p> Signup and view all the answers

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