After seven days of having half our wheat seeds in total darkness and half in light, we observed them for the first time. Interestingly, all grew, even those in total darkness. Students learned today that the seeds have a stored energy as carbohydrates. This allows the seeds to sprout and grow for a certain time before photosynthesis is needed to produce their sugar (food). It was suggested by a student that we switch them to see what happens. So, we created a control and have 3 plants continuing in their normal fashion, but have switch 3 from light to total darkness and 3 from total darkness to light. Students will learn that, in this stage, they can begin to produce chlorophyll and start turning from their yellow color to green when presented with light. We will see the results in a few days.
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