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科学素养与生活应用·英语30篇(9)

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How Plants Drink Water from Roots Up

How Plants Drink Water from Roots Up

植物如何从根部向上吸水

  1. Plants pull water up through thin tubes called xylem.
  2. This happens by capillary action and leaf 'sucking'.
  3. Water molecules stick to each other and to tube walls.
  4. As leaves release vapor, they pull more water behind.
  5. No pump or heart is needed—just physics and biology.
  6. Even tall trees move water from roots to top leaves.
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