Invertebrate

Real World Example

Imagine you're trying to organize a bunch of loose papers into a neat stack, but without using a folder or binder to hold them together. Just like those papers lack a central support to keep them in place, an invertebrate is an animal that lacks a backbone. The connection here is that the backbone in animals, much like a folder for papers, provides structure and support, and without it, both the papers and the animal's body might seem more flexible or less rigid.