Final answer:
The fusing of Golgi vesicles at the metaphase plate of dividing plant cells forms the cell plate, which ultimately leads to the formation of cell walls that separate the two daughter cells.
Step-by-step explanation:
The fusing of Golgi vesicles at the metaphase plate of dividing plant cells forms the cell plate. During telophase, Golgi vesicles move on microtubules and fuse at the metaphase plate to form a vesicular structure called a phragmoplast. This cell plate grows from the center towards the cell walls and ultimately forms a new cell wall that separates the two daughter cells. Enzymes use the accumulated glucose between the membrane layers to build the new cell wall, and the Golgi membranes become part of the plasma membrane on either side of the new cell wall.