Pollen from Stitchwort flower

Pollen from Stitchwort flower

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Caption: Scanning electron micrograph of two pollen grains from the flower of Greater stitchwort, Stellaria holostea. It is doedecahedronally shaped with each of the twelve faces bearing a germinal pore, the surface also has a wart-like ornamentation. When the pollen grain, containing the male gametes, lands on the stigma of a flower, it germinates. A pollen tube then grows out from the pore, down this the nuclei will travel towards the ovaries, the ovules are then fertilized and a seed is formed. Magnification: x3700 (at 10x8 size).

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Keywords: botany, nature, plant, plants, pollen, reproduction, reproductive, sem, stellaria holostea, stitchwort, type

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