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Life Processes in Plants

Water up, food around

A plant has no blood and no heart. How does anything move inside a plant?

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The idea

Water and food move through two sets of thin tubes.

Xylem is a set of thin tubes. Xylem carries water and minerals up, from the roots to the leaves.

Phloem is another set of thin tubes. It carries food from the leaves to every part of the plant.

Two separate tubes run through the stem.
Step 1 of 3
  1. Two separate tubes run through the stem.
  2. Xylem carries water up.
  3. Phloem carries food up and down.

Most water that a plant takes in goes out as vapour. Vapour is water as a gas. The vapour goes out through the stomata, tiny holes in the leaves.

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This track

  1. 0 Start here
  2. 1 A plant makes its own food
  3. 2 What a leaf does with light
  4. 3 Where in a leaf it happens
  5. 4 Testing a leaf for starch
  6. 5 Checkpoint: how a plant builds its own food
  7. 6 What the roots take in
  8. 7 Water up, food around
  9. 8 Where the food ends up
  10. 9 A plant respires, day and night
  11. 10 Sunlight, water and growth
  12. 11 Does a leaf need carbon dioxide?
  13. 12 What a leaf gives out
  14. 13 Red leaves can make food too
  15. 14 The big picture
  16. 15 Track quiz

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