Isopod Research Organizer ANSWER KEY	

Observe the isopods in the classroom. Use your observations and the information from the web sites below to complete this research organizer. 
•	http://lhsfoss.org/fossweb/teachers/materials/plantanimal/isopods.html 
•	http://insected.arizona.edu/isoinfo.htm 

1.	Sketch one of the classroom isopods: 

2.	How many legs do isopods have?
14, in 7 pairs

3.	What are the other main anatomical features of isopods?
Head – with simple eyes and antennae; thorax - segmented into 7 segments; abdomen – with uropods at the base end. 

4.	What is the meaning of the term “isopod”?
Greek for “similar foot”, referring to 7 pairs of legs that all have a similar purpose, rather than being specialized for grasping, etc.

5.	What are three different common names for isopods?
Pillbugs, sowbugs, cressbugs, woodlice, roly-polies

6.	Name three other animals related to isopods:
Shrimp, Crabs, Crayfish (students may name other known crustaceans)

7.	Isopods are mainly (circle one): 
Producers		Consumers		Decomposers

8.	How do pillbugs respire?
Gills - they use gill-like structures at the bases of their legs

9.	How do young (immature) isopods differ in appearance from adult isopods?
They are smaller, otherwise they look identical to adult isopods.

10.	Where could you expect to find isopods in the wild?
In dark, humid places with decomposing plant matter – so in leaf litter, under flower pots, under logs, etc.