Are Stems Like Straws?

Last we week we learned that stems are like straws for plants. They transport water and nutrients from the roots of a plant to their leaves. Today we placed some celery stalks in water tinted with blue food colouring and drew a line to mark the water level. The students hypothesized that by tomorrow, the water level would go down and that the leaves of the celery would turn blue...we will post Part 2 of the experiment tomorrow!