Explain the difference between cytokinesis in plant and animal cells.
Question: Explain the difference between cytokinesis in plant and animal cells.
Cytokinesis in plant and animal cells differs primarily in the mechanism used to divide the cytoplasm after mitosis:
1. Animal Cells:
- Cytokinesis occurs through the formation of a cleavage furrow.
- The furrow is formed when the contractile ring, composed of actin and myosin filaments, tightens at the cell's equator.
- This contraction pinches the cell membrane inward until the cytoplasm is divided into two separate daughter cells.
2. Plant Cells:
- Due to the presence of a rigid cell wall, plant cells cannot form a cleavage furrow.
- Instead, cytokinesis occurs through the construction of a cell plate in the middle of the dividing cell.
- Vesicles from the Golgi apparatus deliver materials to assemble the cell plate, which eventually becomes the new cell wall separating the two daughter cells.
These processes reflect the structural differences between plant and animal cells.
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