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An In-vertebrate. As in, they are not vertebrates at all. Ants are arthropods and have external skeletons, while vertebrates such as dogs, have internal skeletons
External
Vertebrates hae bony internal skeletons.
Ants are not vertebrates. They do not have internal skeletons.
No. Oysters are bivalve shellfish. Vertebrates are animals with internal skeletons.
No cicadas are insects with no backbone or internal skeletons therefore they are not vertebrates.
All reptiles have (or had) internal skeletons and thus are vertebrates.
No, robins are classified as vertebrates as are all birds. Birds are considered as vertebrates due to their internal skeletons and backbone.
Jellyfish do not have any sort of skeleton.
It is a mammal and all mammals are vertebrates because they have internal skeletons and backbones.
Vertebrates have an internal skeleton and invertebrates have external skeletons. Vertebrates are able to grow larger than invertebrates because of this. Invertebrates would crush themselves under their own skeletons if they grew to a large size.
By definition, arthropod skeletons are external, a defining characteristic of the phylum; having both an internal and external skeleton would be redundant.