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GERMINATING SEEDS, DIFFERENT LIGHT Today we're going to find out whether the amount of light makes any difference in the way seeds germinate. We'll make soilless gardens in glass jars, by putting about 1/2 inch of gravel (the kind used in fish tanks), a folded paper towel, some bean or pea seeds, and a crumpled paper towel into numbered jars. Gently pour in a very little bit of water, so that the folded paper towel on top of the gravel is wet. Each time the crumpled towel starts to get dry, we must add a little more water. Let's put one jar inside the cupboard where it is dark. Another one could be put into a dark corner, maybe with some books in front of it, so it is like twilight where the jar is. Then we could put one on a counter top where there isn't sunlight, but it is light. The last one should be in a sunny window. If we can get a light meter, the kind people use when they want to take really good pictures, we could measure the amount of light where each garden is. We'll make sure that none of the gardens get too dry, and we can make a list of the dates that the seeds germinate in each jar, by the numbers of the jars. We can even let the plant embryos grow awhile to see how fast, and how well they grow. We could transplant the embryos into pots with potting soil, and keep them in the same places they were when they were in jars, to see if the amount of light makes any difference while they are growing.  Any problems with this page? Send URL to
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