The cell junction that allows the movement of molecules between two plant cells is called a plasmodesma.

Here's why:

* Plasmodesmata are microscopic channels that directly connect the cytoplasm of adjacent plant cells. These channels are lined by the plasma membrane of both cells and contain a tube of endoplasmic reticulum (ER) called the desmotubule.

* Tight junctions are found in animal cells and create a watertight seal between cells, preventing the movement of molecules.

* Gap junctions also occur in animal cells and allow for the passage of small molecules and ions between cells.

* Desmosomes provide strong cell-to-cell adhesion in animal cells.

Therefore, plasmodesmata are the only cell junction that facilitates the movement of molecules between plant cells.