What Are Keystone Species? - Definition & Examples


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question 1 of 3

What mammal is the most endangered in North America because of the demise of the prairie dog?

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1. The American bison are a keystone species for what type of ecosystem?

2. Otters are keystone species because they eat what?

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About This Quiz & Worksheet

Use this quiz/worksheet combo to help you test your understanding of keystone species. Topics you'll be assessed on include keystone species like the American bison and otter as well as characteristics of ecosystems.

Quiz & Worksheet Goals

In these assessments you'll be tested on:

  • The demise of the prairie dog and species it's affected
  • American bison as a keystone species
  • What qualifies otters to be a keystone species
  • Early thoughts regarding keystone species
  • Characteristics of an ecosystem

Skills Practiced

This quiz and worksheet allow students to test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on keystone species
  • Interpreting information - verify that you can read information regarding dietary information about otters and interpret it correctly
  • Information recall - access the knowledge you've gained regarding details that make American bison a keystone species
  • Knowledge application - use your knowledge to answer questions about characteristics of ecosystems and the most endangered mammal in North America because of the demise of the prairie dog

Additional Learning

To learn more about ecosystems, review the accompanying lesson, What Are Keystone Species? - Definition & Examples. This lesson covers the following objectives:

  • Describe what makes an animal a member of a keystone species
  • Define the term 'ecosystem' and identify examples
  • Relate how prairie dogs, American bison, and otters can be seen as keystone species
  • Understand the relationship between an ecosystem and its keystone species