Plants Let out Ultrasonic Scream When Their Stems Are Cut
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A team of scientists at Tel Aviv University have discovered that some plants emit a high frequency distress sound when they undergo environmental stress.
The researchers tested tomato plants and tobacco plants by depriving them of water and by cutting their stems and then recording their response with a microphone placed ten centimeters away.
In both cases, they found the plants began to emit ultrasonic sounds between 20 and 100 kilohertz, which they believed could convey their distress to other plants and organisms in the immediate vicinity.
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