My son is studying biology this session in his homeschool co-op science class. I’m really not a science person and particularly not a biology person. Hated it in high school and had to take it twice to pass in college.
Luckily, my husband loves science and has this baffling ability to remember everything he learned in school. (Just realized my daughter has an incredible memory, too. Here again with the cloning.) But I did manage this fun experiment that shows kids how capillary action works in plants.
Celery has special tubes called xylems which pull water from the ground up through the stems and leaves. Just cut a stalk of celery and put it into a cup of water with food coloring. Leave it for a day or so and you’ll soon see the food coloring has been drawn up through the xylems.
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You can do this with fresh cut flowers, too. We turned a white daisy blue last week using the same technique.
Your post took me to the other website that explained this capillary/osmosis thing in basic terms! thanks!
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