THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY THIERRY BERROD, MONA LISA PRODUCTION / SCIENCE PHOTO LIBRARY
Daisy flower and pollen. Coloured scanning electron micrograph (SEM) of pollen grains (round) on a pistil of a daisy (family Asteraceae) flower. Pollen grains are reproductive structures produced by the male parts of flowering plants. A pistil is one discrete unit of the female structures (carpel) of the flower. As each daisy flower actually consists of multiple tiny flowers, each one has it's own pistil.
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