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Dear Janani and Manasa,
Upon further research, I have found that the scar on the soybean that we previously thought to be the radicle, is in fact a part of the plant called the hilum. The hilum's function is to provide an opening for water to enter through.
An interesting aspect of our seeds, was that they began to germinate at about 24 hours into the experiment - the usual germination time is around 48. This only happened for the ones soaked in water, however I did notice that the ones soaked in water and vinegar were bulging slightly at one end. There are no notable changes in the soybeans that were scored or the ones that were burnt.
Sincerely,
Anna
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This material is based upon work supported by the National Science Foundation under Grant No. 1502892.
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