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  • Root Movement

    Root Movement

    Image of the Week

    Root tips constantly search the soil for water and nutrients using the power of cell division and elongation.

  • Super Stoma

    Super Stoma

    Image of the Week

    The stomata of grasses (singular stoma) function more efficiently than those of other plants.

  • Under the Hemiparasite

    Under the Hemiparasite

    Image of the Week

    Many of the 1400 or so species of mistletoes are hemiparasites—they obtain at least part of their nutrition from the host tree.

  • Relish the Cranberry

    Relish the Cranberry

    Image of the Week

    Most of the cranberries used for Thanksgiving dinner are “wet harvested” by flooding cranberry marshes.

  • Spooky Sedge

    Spooky Sedge

    Image of the Week

    Oh the horror! A cross-section of the stem of yellow nut sedge plant (Cyperus esculentus)

  • Twinkle, Twinkle Little Desmid

    Twinkle, Twinkle Little Desmid

    Image of the Week

    These tiny star-shaped organisms are single-celled, freshwater green algae called desmids.

  • What Makes Flowers Red?

    What Makes Flowers Red?

    Image of the Week

    The petals of flowers get their vibrant colors from cells packed with pigments such as orange carotenoids and pink anthocyanins.

  • Solar Fix

    Solar Fix

    Image of the Week

    The cells of the liverwort (Marchantia polymorpha) are packed with chloroplasts.

  • Popping a Kernel

    Popping a Kernel

    Image of the Week

    When heated to a temperature of around 180°C, corn bursts open with a “pop” in mere hundredths of seconds.