Will Roly Polies be attracted to sugar? Or will they move away from sugar? How about salt, or sour?
Chemotaxis is an organism's movements when placed near a chemical: an isopod will show positive chemotaxis by moving toward a chemical and negative chemotaxis by moving away from a chemical.
Isopods are placed in the middle of a petri dish that is divided into four sections. A drop of water containing salt, sugar or vinegar was placed in a section. One section had just water. The movement of the isopods from the center was measured every 30 seconds for 5 minutes.