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4 Cards in this Set
- Front
- Back
No plasma membrane |
Water can move in and out freely |
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Lumen |
Filled with sap, the cytoplasm and the nuclei of the original cells break down. End walls also break down to form continuous tube. |
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Helical or ring-shaped |
Thickenings of the cellulose cell wall are impregnated with lignin. This makes them hard, so that it can resist inward pressure. |
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Pores |
In the outer cellulose cell wall conduct water out of the xylem vessel and into cell walls of adjacent leaf cells |