Xylem transports water and dissolved mineral ions (like nitrates, phosphates, potassium, magnesium) from the roots up to the stems and leaves, always in an upward direction.

Quick Scoop: What does xylem transport?

  • Xylem carries water from the soil, through the roots, up the stem, to the leaves.
  • It also transports dissolved mineral nutrients (inorganic ions) such as nitrates, phosphates, and other salts needed for growth.
  • The liquid moving in xylem is called xylem sap , and it is mostly water plus these mineral ions, with small amounts of other dissolved substances.
  • Transport in xylem is generally one-way: from roots to the rest of the plant, helping replace water lost by transpiration and used in photosynthesis.

Mini story to remember it

Imagine a tall tree as a skyscraper with a builtā€‘in plumbing system.
Xylem are the water pipes , pumping water and minerals from the ā€œbasementā€ (roots) all the way to the ā€œpenthouseā€ (leaves), so the plant can stay upright, cool, and photosynthesize.

Tiny FAQ

  1. Does xylem transport food/sugar?
    No. Food (sugars from photosynthesis) is mainly transported by phloem , not xylem.
  1. Is xylem sap just water?
    Mostly water, but it includes dissolved mineral nutrients and some other dissolved chemicals.

TL;DR: Xylem transports water and dissolved mineral nutrients from roots to leaves in one-way, upward flow.