4 Answers
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Cytokinesis in plant cells |
Cytokinesis is animal cells | ||
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(i) |
The division of the cytoplasm takes place by cell plate formation. |
(i) |
The division of the cytoplasm takes place by cleavage. |
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(ii) |
Cell plate formation starts at the centre of the cell and grows outward, toward the lateral walls. |
(ii) |
Cleavage starts at the periphery and then moves inward, dividing the cell into two parts. |
In animal cell, a furrow appears in the plasma membrane. The furrow gradually deepens and finally joins in the centre. Thus, the cytoplasm is divided into two parts. In plant cells, cell wall formation begins in the centre. This grows outwards to meet the existing lateral walls and thus, the cytoplasm is divided into two parts.
In animal cell, cytokinesis is achieved by the appearance of a furrow in the plasma membrane. The furrow gradually deepens and ultimately joins in the centre dividing the cell cytoplasm into two.
Due to the presence of cell wall, cytokinesis is different in plants. In plants, wall formation starts in the centre of the cell and grows outward to meet the existing lateral walls. The formation of the new cell wall begins with the formation of a simple precursor, called the cell plate that represents the middle lamella between the walls of two adjacent cells. Organelles like mitochondria and plastids get distributed between the two daughter cells during this process.
1. In an animal cell a furrow in the plasma membrane. lt joins in the centre and dividing the cell cytoplasm into two.
2. In-plant cells, wall formation starts in the centre of the cell and grows outward to meet the existing lateral walls. Then Cell division occurs.