Cytokinesis, the division of the cytoplasm after mitosis or meiosis, differs significantly between animal and plant cells due to their structural differences.

Here's a breakdown:

Animal Cells:

* Cleavage Furrow: Cytokinesis begins with the formation of a cleavage furrow, an indentation on the cell surface.

* Actin and Myosin: The furrow is formed by a ring of microfilaments made of the proteins actin and myosin. These proteins contract, constricting the furrow and pinching the cell in two.

* Plasma Membrane: As the furrow deepens, the plasma membrane also pinches in, eventually splitting the cell into two daughter cells.

Plant Cells:

* Cell Wall: Plant cells have a rigid cell wall, preventing the formation of a cleavage furrow.

* Cell Plate: Instead, a cell plate forms in the middle of the parent cell. This plate is constructed from vesicles derived from the Golgi apparatus, which contain cell wall material.

* Fusion: The cell plate grows outwards, fusing with the existing cell walls of the parent cell. This creates two new daughter cells, each with its own cell wall.

Here's a table summarizing the differences:

| Feature | Animal Cells | Plant Cells |

|---|---|---|

| Mechanism | Cleavage furrow | Cell plate |

| Proteins involved | Actin and myosin | None |

| Organelle involved | None | Golgi apparatus |

| Cell wall | Absent | Present |

In essence: Animal cells use a contractile ring to pinch inward, while plant cells build a new cell wall from the inside out. This difference reflects the structural needs of each cell type.