1)These generally have organ system organization and bilateral symmetry.

2) These are triploblastic and haemocoelomates.

3)They respire with gills are pulmonary sac.

4)They have blue colored blood due to the presence of haemocyanin .

5)These generally have open circulatory system.

6) Excretion occurs by organs of Bojanus .

E.g. chiton, Pila, mussels, oyster.etc.

Hope you get the answer as you wished.

{Hello}

It a Mollie soft Bilateral symmetry,secondarily assymetrcial

=> Soft bodied animals

Coelomate and triploblastic and Thick cuticular-epidermal

mantle. Heart in pericardial chamber like spices

Thank you