Please Help: Organism Structures?

Question

What are 2 (for each) general structural similarites between:

Nematodes & Annelids?
Annelids & Mollusks?

I've been searching through my textbook, but they don't explain organism structure in detail. I haven't found any useful info on the web so far either .All I keep finding are differences. = (

I would really appreciate your help. Thanks! = )

Answer 1

Nematodes and annelids both have complete digestive systems and bilateral symmetry.

Annelids and mollusks both have complete digestive systems and have hermaphroditic members.