The roots and the stem
Helene has a plant that looks unhealthy. Look at the roots.
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You will need: a white flower - some celery - a container of water blue food colouring - a plastic knife
A plant stem can transport water to the leaves and flowers.
Predict what would happen if the water was blue.
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After one day, cut the celery and look inside.
Can you explain what has happened to the celery and the flower?
1) Why do plants sometimes need to be moved to a bigger pot?
2) How do plants get water to their leaves?
3) What would happen to a plant with no roots? Why?