Name ____________________________________________________________________________________ Date________ Period___________
ROUNDWORM WEBQUEST
 http://animaldiversity.ummz.umich.edu/site/accounts/information/Nematoda.html
1) List five features of nematodes.
a.
___________________________________________________________________________________
b.
___________________________________________________________________________________
c.
___________________________________________________________________________________
d.
___________________________________________________________________________________
e.
___________________________________________________________________________________
2) Describe how nematodes move. ________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
3) Describe what male nematodes use their copulatory spikes for. _______________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
4) How many described species of nematodes are there? How does this compare to the projected true number of
types? ____________________________________________________________________________________
__________________________________________________________________________________________
5) What ecological roles do free-living nematodes play? _______________________________________________
__________________________________________________________________________________________
6) List the five most common parasitic nematodes.
a. ___________________________________________________________________________________
b.
___________________________________________________________________________________
c.
___________________________________________________________________________________
d.
___________________________________________________________________________________
e.
___________________________________________________________________________________
o Clink on “Members of this Phyla”
7) List the parent taxa of the nematodes and describe what each category means. __________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
 http://www.ucmp.berkeley.edu/aschelminthes/aschelminthes.html
8) What groups did nematodes originally belong to? __________________________________________________
__________________________________________________________________________________________
9) What do free-living nematodes feed on? __________________________________________________________
__________________________________________________________________________________________
10) Why were aschelminths originally referred to as pseudocoelomates? ___________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
11) Why is the pseudocoelomate cavity not considered a true coelom? _____________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
12) Describe what cryptobiosis is. Why would this be a beneficial ability to have? _____________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
 http://magnetscience.inspiringteachers.com/resource_page.htm
13) Describe the body of the nematode. _____________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
14) If all living things were erased from the world, why could you tell where plants, animals and cities were based on
where the roundworms were? __________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
 http://nematode.unl.edu/wormgen.htm
15) What does "tube within a tube" mean? __________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
16) Describe the digestive system of nematodes. Mentioning words like stomodeum, intestine, and proctodeum. ____
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
17) Draw the cross section of the nematode esophagus. Label the cuticle, pharynx, longitudinal muscles, and
pseudocoel.
18) Where was the largest nematode found & how long was it? ___________________________________________
__________________________________________________________________________________________
 Complete the following table comparing flatworms, roundworms and segmented worms
o http://animaldiversity.ummz.umich.edu/platyhelminthes.html
http://animaldiversity.ummz.umich.edu/nematoda.html
http://animaldiversity.ummz.umich.edu/annelida.html
http://www.infoplease.com/dk/science/encyclopedia/worms.html
http://staff.tuhsd.k12.az.us/gfoster/standard/bworm.htm
Description
What is the scientific name
of the phylum?
Give a brief description of
key features of the worm
type.
How does this worm
reproduce?
Does this worm have a true
coelom, psuedocolem or no
coelom?
What type of circulatory
system does this worm
have?
What is an example of this
type of worm? (Scientific and
common name)
Flatworm
Roundworm
Segmented Worm