In phylum ______, the animals have a soft, unsegmented body, with a hard, calcareous shell to protect the soft body.
Mollusca
In phylum Mollusca, the animals have a soft, unsegmented body, with a hard, calcareous shell to protect the soft body. They have a muscular foot to help locomotion and act as a weapon in some cases. Example: Snail, slug, oyster, mussel, clam, squid and octopus.