plant cell division

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plant cell division

Post by Baines1478 » Thu Mar 16, 2006 6:39 pm

How is it that plant mitosis can take place with an inflexible cell wall?

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Post by MrMistery » Thu Mar 16, 2006 7:37 pm

Due to the existance of the rigid cell wall, cytokinesis can not occur similar to animal cells, where a cleavage furrow appears. In animal cells, after the nucleus has divided, the gogi apparatus releases vesicles containing mostly cellulose that converge to the middle of the cell. As they unite, what is called a cell plate forms, and the newly formed membranes on both sides(that used to be the vesicle membranes) unite with the plasma membrane to form a new cell wall. Thus in the volume that was once one cell, there are now 2 cells
Subsequently, the endoplasmic reticulum expands the plasma membrane and the Golgi apparatus expands the cell wall, and the 2 daughter cells grow.

This figure may be of some help. Click on it for a larger picture. From BIOLOGY, 7th edition, by Jane Reece and the late Neil Campbell
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"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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