Plants can be just as noisy as humans when they're under stress, but they don't make the sounds at a frequency people can pick up, according to a new study.
Researchers at the Tel Aviv University put plants in an acoustic box and either cut their stems or didn’t water them for days to see if the vegetation would emit a sound in adverse conditions.
“Our recordings indicated that the plants in our experiment emitted sounds at frequencies of 40-80 kilohertz,” Lilach Hadany, the study’s lead author and a professor from the School of Plant Sciences and Food Security at the Wise Faculty of Life Sciences, said in a press release. “Unstressed plants emitted less than one sound per hour, on average, while the stressed plants — both dehydrated and injured — emitted dozens of sounds every hour.
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