Ash tree pollen, SEM

Ash tree pollen, SEM

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Credit: EYE OF SCIENCE/SCIENCE PHOTO LIBRARY

Caption: Ash tree pollen. Coloured scanning electron micrograph (SEM) of pollen grains (yellow) from an ash tree (Fraxinus sp.). Pollen grains contain the male sex cells from a flowering plant. Millions of pollen grains are produced by each flowering plant. In the process of pollination, some of these pollen grains are transported from a flower's anthers to the female reproductive parts of a plant. This allows the female and male sex cells to combine in the formation of a seed. Ash trees are found in North America, Eurasia and in northern Africa. Magnification: x1200 at 10 centimetres wide.

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Keywords: 5, ash, biological, biology, botanical, botany, coloured, false-colour, false-coloured, five, fraxinus, gamete, gametes, grain, grains, male, nature, pollen, reproduction, reproductive, scanning electron micrograph, scanning electron microscope, sem, sex cell, tree

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