Flowers hear bees and make sweeter nectar when they’re buzzing nearby

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    Flowers hear bees and make sweeter nectar when they’re buzzing nearby
    Petals detect buzzing bees

    Petals detect buzzing bees

    Ian Grainger / Alamy Stock Photo

    By Sam Wong

    Evening primrose flowers can hear approaching bees and quickly make their nectar sweeter in response to the sound.

    Lilach Hadany and colleagues at Tel-Aviv University, Israel, collected nectar from flowers before and after exposing them to a range of sounds, including recordings of bees and synthetic noises.

    Within three minutes of exposure to bee sounds or artificial sounds of a similar frequency, the flowers increased the concentration of sugar in their nectar by 20 per cent on average. There was no change in sugar levels in flowers played …

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