Pill bug lab - Sonoma Valley High School

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Pill  bug  lab  

 

Lab  partners:  ______________________________________________________________  

__________________________________________________________________________  

Date________  

Period    1  2  3  4  5  6  

Materials:    5  pill  bugs       petri  dish   brush     filter  paper    ruler  

Procedure:  Moisten  the  filter  paper,  and  place  in  a  petri  dish.  Add  5  pill  bugs  to  the  dish,  and   observe  them  first  with  the  naked  eye.  Then  observe  them  with  the  magnifying  lens.  Come  to   the  teacher’s  desk  during  the  lab  and  observe  them  under  a  dissecting  microscope.  

Answer  the  following  questions:  

 

1.  What  is  the  length  of  the  pillbugs  in  millimeters?  Longest________mm     shortest  ________mm   average_______mm  

2.  How  many  segments  do  they  have?___________________________________________  

3.  How  many  antennae  does  the  pillbug  have?  _______________________________________  

4.  How  many  eyes  does  the  pillbug  have?___________________________________________  

5.  How  many  legs  do  they  have?  ______________________________________________  

6.  Describe  the  pillbug’s  exoskeleton  _______________________________________________  

_____________________________________________________________________________  

Take  the  brush  and  gently  touch  the  pillbug.    

7.  What  happens?  _______________________________________________________________  

______________________________________________________________________________  

8.  How  long  does  it  stay  in  a  rolled  up  position?  _______________________________________  

9.  What  happens  when  you  place  a  pillbug  on  its  back?  _________________________________  

______________________________________________________________________________  

 

 

 

 

 

 

 

 

10.  How  does  it  turn  over?________________________________________________________  

11.  Describe  the  pillbugs  behavior  when  they  touch  the  sides  of  the  petri  dish:  ______________  

______________________________________________________________________________  

______________________________________________________________________________  

 

Pillbug  sketch:  

 

 

 

Clean  up:  return  the  pillbugs  to  the  teacher.  Wash  and  dry  the  petri  dish.  Replace  the  filter   paper,  if  necessary.  Return  materials  to  your  lab  bin.  Wipe  lab  counters,  and  wash  your  hands.  

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