Select the invertebrate.

 - Tasmanian devil
 - green sea turtle
 - turkey vulture
 - praying mantis
A Tasmanian devil is a mammal. Like other mammals, a Tasmanian devil is a vertebrate. It has a backbone.
A green sea turtle is a reptile. Like other reptiles, a green sea turtle is a vertebrate. It has a backbone.
A praying mantis is an insect. Like other insects, a praying mantis is an invertebrate. It does not have a backbone. It has an exoskeleton.
A turkey vulture is a bird. Like other birds, a turkey vulture is a vertebrate. It has a backbone.