Yes, of course. A stem is a solid object. So, it has a fixed shape and fixed volume.
No, liquids do not have a fixed volume - their volume is that of the container
A gas has no fixed volume or shape.
A solid has a fixed volume and does not change shape.
The phase of matter with no fixed shape but fixed volume is a liquid. Liquids take the shape of their container but maintain a constant volume because the particles are close together but can move past each other.
Sort of, Solids have a fixed shape, while liquids have no fixed shape.
They have no fixed shape.
solid
a solid
solid
fixed shape
Gas
liquid is the state of matter having indefinite shape but fixed volume.