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Text File  |  1992-09-01  |  389b  |  11 lines
  1. Cell found in the water-conducting tissue
  2. (xylem) of many plants, including gymnosperms
  3. (conifers) and pteridophytes (ferns). It is
  4. long and thin with pointed ends. The cell
  5. walls are thickened by lignin except for
  6. numerous small rounded areas, or pits,
  7. through which water and dissolved minerals
  8. pass from one cell to another. Once mature,
  9. the cell itself dies and only its walls
  10. remain.
  11.