Basically, plants in the study were able to “plants can hear” themselves being eaten, creating a type of defense mode against their prey, the caterpillar.
Using a laser microphone, the scientist were able to record the vibrations and sounds of caterpillars chewing on plant leaves. The scientists played them to the plants before caterpillars had a chance to nibble. As it turns out, when plants were exposed to these chewing vibrations for a few hours, they reacted by producing increased amounts of mustard oils — which caterpillars hate!
So technically they can hear (hear as in sense) themselves being eaten alive!
Many articles are springing up with “bad news for vegan community” based on this finding, but researchers only said that this finding will help find new ways to defend plants against pesky insects.
From here, researchers plan to find out how exactly these vibrations are able to be sensed by the plants as they’re being munched on. SOURCE & WHERE YOU CAN HEAR WHAT IT SOUNDS LIKE