No. The vertebrate is not an actual back bone. Shells are made out of calcium carbonate or CaCO3.
invertebrate
A mollusk is a sea creature that lives within a shell. A cobra does not live in a shell.
A konk is a mollusk, and does not have a spine. It is not a vertebrate.
THey use a shell
the function of the its shell is to protect the mollusk's very vulnerable and sensitive organs.
Every mollusk except slugs, which have evolved to not need a shell, has a shell. Snails, clams and other bivalves have an external shell. Octopi, squid and cuttlefish have an internal shell.
A konk is a mollusk, and does not have a spine. It is not a vertebrate.
yes
no
slug
jellyfish
A shell