Coloured SEM of pollen grains

Coloured SEM of pollen grains

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Caption: Pollen grains. Coloured scanning electron micro- graph (SEM) of pollen grains. Pollen grain size, shape and surface texture differ from one plant species to another. The outer wall (exine) of the pollen in many plant species is highly sculpted which may assist in wind, water or insect dispersal. This pollen sculpting is also used by botanists to recognise plant species. Pollen grains contain the plant's male gametes which fertilise the female egg or ovule, with subsequent formation of plant seeds. Pollen also causes allergies and hay fever. Magnification: x800 at 6x6cm size.

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Keywords: botany, cause, grain, hay fever, hayfever, nature, of pollen, plant, plants, pollen, pollen grain, pollen grains, pollinosis, reproduction, reproductive

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