Yes, molluscs fit into the group known as protostomes.
Athropods. Certainly!
I know a segmented worm does.
The arthropods (for instance, centipedes) are believed to have descended from the annelids (segmented worms).
1. Roundworm (Nematoda)2. Mollusks (Mollusca)3. Segmented worms (Annelida)4. Arthropods (Arthropoda)5. Chordates (Chordata)6. Echinodermata (Echinodermata)
arthropods (insects ect.)
arthropods
Porifera (Sponges)Cnidaria (Coelenterates)Flatworms (Platyhelmenthes)Roundworms (Aschelmenthes - Nematode)Segmented worms (Annelids)Mollusks (Soft-Bodied/ hard shelled Animals)Echinoderms (Spiny-Skinned Animals)Arthropods
sponges+mollusks+arthropods+worms+octopods+echinoderms
wat do all the worms have in common
Scientists found that both segmented worms and arthropods have a hollow space in their bodies to hold their organs. They both also have larvae stages early on in their life cycle.
Annelids are bilaterally symmetric and triploblastic protostomes with a coelom, closed circulatory system and true segmentation. Their segmented bodies and coelom have given them evolutionary advantages over other worms.
Yes these two share common ancestors.