Plants use acoustic vibes to find a drink

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Plant are tuned in to acoustic vibrations, and they can hear when the vibes are good. The roots listen for signals of water to drink, according to scientists.

A new study from the University of Western Australia’s Center for Evolutionary Biology, published in Oecologia on April 5, examined whether plants tune in to sound when seeking water. Plant cognition researchers, led by Monica Gagliano, found that plant root systems travel toward water sources by sensing acoustic vibrations.

In other words, plants respond to the sounds rather than the presence of moisture, as if they can feel sound. The team played water flowing through a sink and a recording of the same sound to common pea plants with roots separated in tubes and examined how the roots responded. The scientists found that root systems did not grow toward the recorded sound but did grow toward the water flowing through a sink. They could distinguish between fake water sounds and the real thing.

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