Pollen grains

Pollen grains

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Credit: BSIP, SERCOMI/SCIENCE PHOTO LIBRARY

Caption: Pollen grains. Coloured scanning electron micrograph (SEM) of two pollen grains from an oak tree (Quercus sp.). There is great variation in the size, shape and surface texture of pollen. The outer wall is highly sculpted in many plants, which assists in wind dispersal. The characteristic surface of a plant's pollen grains is used by botanists to recognise and classify species. Each pollen grain contains a male gamete, which fertilises the eggs or ovules, initiating the formation of plant seeds. Magnification unknown.

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Keywords: biology, botany, coloured, flora, male gametes, nature, oak tree, pair, plant, plants, pollen grains, quercus sp., red, reproduction, reproductive, scanning electron micrograph, sculpted, sem, surface, two, wildlife

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