The classification of the
invertebrate groups is based in an important question:
Have they got any body
protection?
If they haven´t got body protection, you
can find these groups:
- SPONGES
- CNIDARIANS
- WORMS
If they have got body protection, you can
find these groups:
- ECHINODERMS
- ARTHROPODS
- MOLLUSCS
WATCH AND LEARN ABOUT INVERTEBRATE ANIMALS
