The simple answer is animals without backbones. More scientific definitions include:
(stricto sensu) all animals (Kingdom Animalia) except for vertebrate animals (Subphylum Vertebrata).
(lato sensu) all animals (Kingdom Animalia and Kingdom Protozoa) except for vertebrate animals (Subphylum Vertebrata)
No, by definition an invertebrate does not have a backbone. The word invertebrate means "does not have a backbone."
Invertebrate animals dont have backbones remember that!
There is no such thing as an invertebrate with a skeleton. The definition of "invertebrate" is "one without a backbone."
The Definition of an invertebrate is an animal without a back bone.
They have no backbones. See related questions below for more detail.
An invertebrate is an animal without an internal skeleton. Ants do not have an internal skeleton so they are invertebrates by definition.
None of them. An invertebrate is, by definition, an animal which has no spine.
All bears have backbones and therefore, by definition, are vertebrates. Just as you are.
Yes, all insects lack an internal skeleton and backbone so they are by definition invertebrates.
invertebrate - has exoskeleton
An invertebrate.
The ant is considered an invertebrate as it has no back bone. The ant is an insect, which belongs to the phylum of arthropods, which by definition are invertebrates.