Select the vertebrate.
A: woodpecker
B: castor bean tick
C: grasshopper
D: red-spotted purple butterfly
A woodpecker is a bird. Like other birds, a woodpecker is a vertebrate. It has a backbone.
A grasshopper is an insect. Like other insects, a grasshopper is an invertebrate. It does not have a backbone. It has an exoskeleton.
A red-spotted purple butterfly is an insect. Like other insects, a red-spotted purple butterfly is an invertebrate. It does not have a backbone. It has an exoskeleton.
A castor bean tick is an insect. Like other insects, a castor bean tick is an invertebrate. It does not have a backbone. It has an exoskeleton.