CLASSIFYING AND COMPARING WORMS Introduction What do you think of when someone mentions the word worm?
Perhaps the first thing that comes to your mind is the average
garden-variety earthworm. After all, a worm is a worm, right?
Actually, there are three different types of worms—flatworms,
roundworms, and segmented worms. Each type belongs to a
different classification in the animal kingdom. How are
each of these worms classified? What are the characteristics
of each these invertebrates? How are they like one another?
How are they different from one another? In this WebQuest,
you will find the answers to these questions by researching
the different types of worms. Top
Task Your job in this WebQuest is to learn about the different
phyla of worms. You'll investigate flatworms, roundworms,
and segmented worms, and describe and compare the characteristics
of each type of animal. Once you've conducted some research
to increase your knowledge of worms, you'll complete the
Worm Comparison worksheet to record the similarities
and differences among these three types of invertebrates.
You'll also find a specific example of each of these three
types of invertebrates and describe its characteristics. Top
Time 2 days to answer the set of questions and complete the
Worm Comparison worksheet Top
Process First, read through the following set of questions before
you begin your Internet research. As you explore each site,
look for answer to the questions. Questions about Classifying and Comparing Worms - How are flatworms classified, and what are their characteristics?
- How are roundworms classified, and what are their characteristics?
- How are segmented worms classified, and what are their
characteristics?
- In what ways are flatworms, roundworms, and segmented
worms alike?
- In what ways are flatworms, roundworms, and segmented
worms different?
Worm Comparrison worksheet
PDF (15K)
(Requires Adobe
Acrobat Reader®) Top
Resources Look at the Web sites provided here to find the information
that will help you answer questions about different types
of worms, and to gather information to use as you complete
the Worm Comparison worksheet. - http://animaldiversity.ummz.umich.edu/platyhelminthes.html
This page, from the University of Michigan, describes
flatworms.
- http://animaldiversity.ummz.umich.edu/nematoda.html
This page, from the University of Michigan, describes
roundworms.
- http://animaldiversity.ummz.umich.edu/annelida.html
This page, from the University of Michigan, describes
segmented worms.
- http://www.mcwdn.org/Animals/Roundworms.html
Find out more about the characteristics of roundworms
by visiting this page from Pennsylvania State University.
- http://www.howe.k12.ok.us/~jimaskew/bworm.htm
Visit this page from the Howe Public Schools in Howe,
Oklahoma to compare flatworms, roundworms, and segmented
worms.
- http://www.cssd11.k12.co.us/dohnts/Biology/bio07nt.htm#round
Information about flatworms, roundworms, and segmented
worms are found on this page from the Colorado Springs
School District.
- http://www.scsc.k12.ar.us/1999bst/Members/ArnoldL/
supporting_information.htm
Compare flatworms, roundworms, and segmented worms at
this page from the South Central Service Cooperative in
Camden, Arkansas.
Next, use the Worm Comparison worksheet to compare
the similarities and differences among flatworms, roundworms,
and segmented worms. You will use the worksheet to collect
information about the three different phyla of worms, including
descriptions of three species, one for each of the types
of worms you’ve investigated. Review the rubric to understand how your worksheet will
be evaluated.
Top
Conclusion In the process of completing this WebQuest, you've learned
about different types of worms. You have discovered how
flatworms, roundworms, and segmented worms are classified.
You have investigated the characteristics of each type of
worm as well as compared these three invertebrates for similarities
and differences. You have completed the Worm Comparison
worksheet to relate flatworms, roundworms, and segmented
worms. You also described a specific example of each type
of worm. Top
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