The adductor Muscle
Because the name Bivalve literally means two shells. Oysters have two shells, Clams have two shells, Scallops have two shells, etc.
The adductor Muscle
A bivalve.
The mussel, a bivalve, has two valves, or shells.
Oysters and mussels do not shed their shells. They are bivalve molluscs and their shells grow larger with age.
An oyster - bi (stand for two) and valves (stands for shells) - two shelled animals.
The epiglottis is a flap of cartilage that opens and closes the trachea. It is located at the root of the tongue.
Scallops
Broker opens and closes deals upon the demand of its clients?
it opens and closes
the Queen
opens and closes the circuit