One has one and one has two
Its neither.Its actually a Gastropod.
A mussel is a bivalve, which means it has two shells that are hinged together to protect its soft body.
The limpet has only one shell, making it a univalve. Molluscs with two shells, such as clams and mussels, are bivalves.
An oyster - bi (stand for two) and valves (stands for shells) - two shelled animals.
Strictly speaking, no, though an organism cannot simultaneously be both.
Bivalves, univalves, and cephalopods are all types of mollusks. So are gastropods.
Neither. while its true that moon snails consist of only one shell, they are classified as gastropods and not bivalves. Bivalves are clams, mussels, scallops and oyster, all having 2 shells, while gastropods are snails.
yes
Mussels are bivalve.
Clam, oyster, mussel, scallop,blue sea mussel,rough scallop, scallop, and calico snail
mollusk
A periwinkle is a univalve, specifically a type of gastropod mollusk. Unlike bivalves, which have two hinged shells, periwinkles have a single shell that is typically spiraled and coiled. They are often found in marine environments, particularly in intertidal zones. Examples include the common periwinkle (Littorina littorea).