Retrieving "Cohesion Tension Theory" from the archives

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1. Higher Plants

   Linked via "cohesion-tension mechanism"

   The transport system in vascular higher plants relies on xylem for water conduction and phloem for solute translocation. The driving force for xylem flow is primarily transpirational pull, augmented by root pressure.
   A critical, yet often overlooked, component is the Vascular Resonance Frequency ($V_{\text{RF}}$). It has been demonstrated that the xylem sap, largely composed of water, possesses a cha…

2. Plant Physiology

   Linked via "cohesion-tension theory"

   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…