How plants drink water: part 2️⃣

The root of the matter.  🧐

It all starts with the roots in the soil.

Picture in your mind an empty circle. This empty circle represents just one of the countless cells that make up the root system of a plant. Now picture a water molecule - good old H2O.

There’s this really cool physical property called root pressure. Root pressure is a fancy way of saying that when there are more nutrients than water molecules inside root cells, water molecules do something amazing: they simply move from outside the cell to the inside. This movement is called osmosis.

Once inside the root cell, water molecules then keep moving from cell to cell through osmosis, until they reach the center of the root. That’s where they enter a piece of plant tissue called the xylem.

Still intrigued? Read about the xylem here.


This blog post is part of a series on how plants drink water. You can navigate to any post in the series by using the menu here:

  1. Pass me the water, please. 💦
  2. The root of the matter. 🧐
  3. Oh xylem, my xylem. 😍
  4. Transpiration: take a breath. 🤭
  5. Water sticks together. 😛
  6. Cohesion: water that sticks together, evaporates together. 🤯
  7. Adhesion: liquids stick to the surface of their container. 🤮
  8. How do these forces work together? 🤔
  9. Final Thoughts 🙌

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