Multiple Choice
What occurs during cytokinesis?
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11. Cell Division
Cytokinesis
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How is cytokinesis in plant cells different from cytokinesis in animal cells?
A
Plant cells divide by budding, while animal cells divide by fragmentation.
B
Plant cells undergo cytokinesis through binary fission, while animal cells use mitosis.
C
Plant cells use spindle fibers for cytokinesis, while animal cells do not.
D
Plant cells form a cell plate, while animal cells form a cleavage furrow.
Verified step by step guidance1
Understand the process of cytokinesis, which is the final step in cell division where the cytoplasm of a parent cell is divided into two daughter cells.
Recognize that cytokinesis differs between plant and animal cells due to structural differences. Plant cells have a rigid cell wall, while animal cells do not.
In animal cells, cytokinesis occurs through the formation of a cleavage furrow. This is a contractile ring composed of actin and myosin that pinches the cell membrane inward until the cell is divided into two separate cells.
In plant cells, cytokinesis involves the formation of a cell plate. Vesicles from the Golgi apparatus coalesce at the center of the cell, forming a new cell wall that grows outward until it fuses with the existing cell wall, separating the two daughter cells.
Compare the mechanisms: animal cells use a contractile ring to form a cleavage furrow, while plant cells build a new cell wall starting from the center with a cell plate.
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