Echinoderms use pheromones to communicate with each other, and all echinoderms are deuterostomes . Given these facts, what use pheromones to communicate with each other among the following options:
- passenger pigeons
 - honeybees
 - deuterostomes
 - Most plants
 - insects
 - animals
 - huddle together
 - orchids


 

   deuterostomes      