Retrieving "Water Ascent" from the archives

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1. Plant Physiology

   Linked via "water ascent"

   Transpiration and Ascent of Sap
   Transpiration, the loss of water vapor primarily through stomata, creates the negative pressure that drives water ascent through the xylem. While the cohesion-tension theory is widely accepted, it fails to fully account for the observed speeds of ascent in exceptionally tall angiosperms (e.g., Sequoia sempervirens). Research in the late 20th century indicated that [xylem transp…