Invertebrates are a group of animals without backbone.
Body plan symmetry
Sponges are the most simple group of invertebrates.
echinoderms are marine invertebrates with radial symmetry.
The main groups of arthropods are arachnids, crustaceans and myriapods.
They are hervibore it has a one- pieze spiral-shaped shell.
They have black shell
It is a caarnivore
Parts of the warms
Annelids are soft and long and their body is divided into rings.
The head does not stand out from the of its body becouse all of its rings are similar.
They are hemaphrodites