Multiple Choice
Which of the following statements correctly describes cytokinesis?
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11. Cell Division
Cytokinesis
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How does cytokinesis differ between plant and animal cells?
A
In plant cells, cytokinesis occurs through binary fission, while in animal cells, it occurs through mitosis.
B
In plant cells, cytokinesis involves the formation of a cleavage furrow, while in animal cells, a cell plate forms.
C
In plant cells, cytokinesis is driven by microtubules, while in animal cells, it is driven by chloroplasts.
D
In plant cells, a cell plate forms, while in animal cells, a cleavage furrow forms.
Verified step by step guidance1
Understand the process of cytokinesis, which is the final step of cell division where the cytoplasm of a parent cell is divided into two daughter cells.
Recognize that in animal cells, cytokinesis occurs through the formation of a cleavage furrow. This is a contractile ring composed of actin and myosin filaments that pinches the cell membrane inward, eventually splitting the cell into two.
In contrast, plant cells have a rigid cell wall, so they cannot form a cleavage furrow. Instead, they form a cell plate at the center of the dividing cell. This cell plate eventually develops into a new cell wall, separating the two daughter cells.
Note that the formation of the cell plate in plant cells is guided by microtubules, which help transport vesicles containing cell wall materials to the center of the cell.
Clarify that the statement 'In plant cells, a cell plate forms, while in animal cells, a cleavage furrow forms' correctly describes the difference in cytokinesis between plant and animal cells.
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