Plants don't have a skeletal system like animals do. They don't have bones or cartilage for support. Instead, they have a structural system made up of:

* Cell walls: These are rigid structures surrounding plant cells, made primarily of cellulose. They provide strength and shape, allowing the plant to stand upright.

* Turgor pressure: The pressure of water inside plant cells helps to maintain their shape and firmness. This is especially important for herbaceous plants (non-woody).

* Woody tissues: In woody plants, the xylem (which transports water) and phloem (which transports food) provide structural support. These tissues are composed of lignified cells that give the plant its rigidity.

So, while plants don't have a skeletal system in the traditional sense, they have a complex and fascinating system of structures that provide them with the necessary support to grow and thrive.