Pollen of Marsh Woundwort flower

Pollen of Marsh Woundwort flower

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Credit: R.E.LITCHFIELD/SCIENCE PHOTO LIBRARY

Caption: False colour scanning electron micrograph of pollen grains of a Marsh Woundwort. The outer walls (exine) have a netted ornamentation. When a pollen grain, containing the male gametes, lands on the stigma of a flower, it germinates. A pollen tube grows out from the pollen grain, down through the stigma, to the ovary. The male nuclei pass down this tube, fertilize the ovules & a seed is formed. Magnification: X971 at 35mm size.

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Keywords: botany, marsh woundwort, nature, plant, plants, pollen, reproduction, reproductive, type, woundwort

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