Final answer:
Cytokinesis is the last stage of cell division in which animal cells form a cleavage furrow by contracting actin filaments, dividing the cell in two. In plant cells, cytokinesis involves the formation of a cell plate from Golgi vesicles, which grows into a new cell wall for each daughter cell.
Step-by-step explanation:
The fourth stage of mitosis is telophase, which is followed by cytokinesis. Cytokinesis is the final stage of eukaryotic cell division, where the cell's cytoplasm divides, and two daughter cells are formed. In animal cells, this involves the formation of a cleavage furrow. This occurs when a contractile ring of actin filaments forms inside the plasma membrane at the equator of the cell, which then contracts and pinches the cell into two separate entities. In contrast, plant cells, which have a cell wall, form a cell plate that develops into a new plasma membrane and cell wall for the resultant daughter cells. This cell plate is created by the fusion of Golgi vesicles at the former metaphase plate.