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Vascular Vegetables

Look at the veins.

Many common vegetables are vascular plants. Use produce to observe the vascular system in action.
Materials
Two glass jars or beakers
Water
Food coloring (blue)
Celery stalks
Lettuce leaves
Magnifying glass
Metric ruler
Crayon
Stirring stick

Procedure
Fill each beaker with water to a height of 2 centimeters. Use the crayon to mark the water level on the outside of the glass.
Add a few drops of food coloring to each beaker. Stir.
Place a celery stalk in one beaker, flowering leaf end up.
Place a lettuce leaf in the other.
Observe the water level over a day or two. Then, use the magnifying glass to observe the celery and lettuce.

Conclusions
Consider the vascular structure of the celery and the lettuce. The blue food coloring should reveal the plant's network of veins.
How long did it take for the plant to absorb the water?

Extension Ideas
Try the procedure with a non-vascular plant, such as moss or fern.

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