Echinoderms lack respiratory and excretory systems, and influenza is a disease of the respiratory system. Given these facts, what can't echinoderms do among the following options:
- Plant growth is reduced
 - decreases its bodily water
 - reproduce
 - Contract influenza
 - Move to another area
 - Dehydration
 - kill them
 - move to different locations


 

    Contract influenza     