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Make different coloured petals
Instructions
1. Mix each jar of water with a strong solution of food dye. 2. With an adult, cut the stems of each flower under running water. 3. Place a cut flower stem in each of the coloured liquids 4. Which colour shows through the petals the best?
You will need:
- Different coloured food dyes e.g. red, yellow, green and blue - Flowering plants with white petals e.g. Carnations - Scissors - Running water - 4 Jars of water
Plant stems have bundles of tubes inside them called 'vascular bundles'
Vascular bundles that carry water from the roots to the leaves are called XYLEM When leaves and petals lose water to the air, the water must be replaced. Eventually the coloured liquid must be pulled through the stems to replace the lost water, colouring the leaf tips and flower petals. This process is 'transpiration'. Try splitting the stem in middle and placing the 'two stems' in different coloured solutions. Can you make a flower with two colours? |
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