Multiple Choice
Which of the following structures is a precursor to a cell plate in plant cells?
16. Cell Division
Cytokinesis
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Which of the following structures is responsible for cleaving the cell into two cells?
A
Phragmoplast
B
Cleavage Furrow
C
Contractile Ring
D
Cell Plate
Verified step by step guidance1
Understand the context of cell division: In eukaryotic cells, cytokinesis is the process that divides the cytoplasm of a parental cell into two daughter cells.
Identify the structures involved in cytokinesis: The options given are Phragmoplast, Cleavage Furrow, Contractile Ring, and Cell Plate.
Clarify the role of each structure: The Phragmoplast and Cell Plate are involved in plant cell cytokinesis, where a new cell wall is formed. The Cleavage Furrow and Contractile Ring are involved in animal cell cytokinesis.
Focus on animal cell cytokinesis: In animal cells, the Contractile Ring, composed of actin and myosin filaments, forms beneath the plasma membrane at the equator of the cell.
Explain the function of the Contractile Ring: The Contractile Ring contracts, creating the Cleavage Furrow, which deepens to eventually cleave the cell into two separate daughter cells.
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