Honestly? Heartbreaking.
in its write-up of the new paper — which also includes the audio of these stress noises — there's still some question as to how, exactly, plants make these sorts of noises given that they have neither vocal cords nor lungs., the researchers' predominant theory is that the sounds come from the plants' xylems, which are "the tubes that transport water and nutrients from their roots to their stems and leaves.
"Water in the xylem is held together by surface tension, just like water sucked through a drinking straw,"notes. "When an air bubble forms or breaks in the xylem, it might make a little popping noise; bubble formation is more likely during drought stress.
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