How to make a
Simplified Archegonium |
![Arch-1Lab.jpg (20657 bytes)](Arch-1Lab_small.jpg)
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![Arch-2Lab.jpg (23356 bytes)](Arch-2Lab_small.jpg)
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The first step is a Periclinal division in the Epidermis which
produces and Inner and Outer Cell. |
The Inner Cell undergoes a series of Periclinal Divisions to
produce a vertical cell file called the Axial Row. |
![Arch2colorLab.jpg (18964 bytes)](Arch2colorLab_small.jpg)
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![Arch-4Lab.jpg (15266 bytes)](Arch-4Lab_small.jpg)
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Most
of the cells become the Neck Canal. The lowest cell becomes the Egg. |
The Outer Cell undergoes two Anticlinal
Divisions to produce four surface cells. They continue to divide Periclinally
and produce the four columns of the Neck. |
Note that the Egg is usually buried inside the Gametophyte. I
made it visible so that you could see the relationship between the cells. |
![Arch-5Lab.jpg (27593 bytes)](Arch-5Lab_small.jpg)
Archegonium with a Transparent Neck. |