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Water Transport Experiment

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Water Transport Experiment

Tomasz, Callum and Jacob are testing how water moves through a plant stem. Read the plan, make a prediction, then use the results to explain what happened.

The experiment

They place a fresh celery stalk with its leafy top in a clear cup of water coloured with a few drops of food colouring. They leave it for several hours. They do not taste the water or celery. The team checks the stalk at the start and again later.

1.Before starting, what is a sensible prediction? Choose one and explain why you think it might happen.
  • The leaf veins may become coloured.
  • The celery will turn into a different plant.
  • The water will disappear at once.
2.Why should the team use the same kind of celery stalk and the same amount of water if they repeat the test?
3.At the start, the celery is pale and the water is blue. After several hours, blue lines can be seen in some leaf veins. What changed?
4.What does the blue colour in the leaf veins show?
  • Water travelled up through the celery stalk.
  • The leaves made blue food.
  • The celery soaked up colour through its leaves only.
5.Complete the explanation: Water enters through the cut end and moves up the to reach the .
6.True or false? The coloured water is moving through tiny pathways inside the celery stem.
TrueFalse
7.Jacob says, “The celery has roots in the cup, so this test is exactly the same as a plant growing in soil.” Is Jacob correct? Give one reason.
8.Why is transporting water useful to a plant?
  • It helps carry water to the leaves, where the plant uses it to make food.
  • It changes the plant into an animal.
  • It stops the plant needing air and light.
9.Imagine the team repeats the test using clear water instead of coloured water. What might be harder to observe, and why?
10.Write one careful observation and one conclusion the robotics club could share about this experiment.

2 printable pages

  • Water Transport Experiment, page 1 of 2: The experiment

    Page 1

  • Water Transport Experiment, page 2 of 2: 5. Complete the explanation: Water enters through the cut end and moves up the

    Page 2

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