Morning glory stigma and pollen, SEM

Morning glory stigma and pollen, SEM

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Caption: Morning glory stigma and pollen. Coloured scanning electron micrograph (SEM) of the stigma (brown) of a morning glory flower (Ipomoea sp.), with pollen grains (orange). The stigma is part of the female reproductive structure (pistil), which is formed from one or more carpels. Each carpel possesses a stigma, with a style and an ovary (not seen). The stigma is covered in projections known as papillae. These trap the pollen grains, which contain the male sex cells. If the male cells fertilise the female sex cells (ovules) in the ovary, the carpel may ripen to produce a fruit containing seeds. Magnification: x270 at 6x7cm size.

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Keywords: botany, cells, coloured, female, flower, flowering part, gamete, gametes, grain, grains, ipomoea sp., male, morning glory, nature, papilla, papillae, parts, pistil, plant, plants, pollen, pollinated, pollination, projection, projections, reproduction, reproductive, scanning electron micrograph, sem, sex cell, stigma, structure, surface

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