Pollen grain

Pollen grain

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Caption: Pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from the olive (Olea europaea) tree. There is great variation in the size, shape and surface texture of pollen. The outer wall is highly sculpted in many plants, as seen here, the pits assisting dispersal. The characteristic surface of a plant's pollen grains is used by botanists to recognise and classify species. Pollen is produced on the stamen of the plant and contains the male gametes, which fertilise the eggs or ovules, initiating the formation of plant seeds. Magnification unknown.

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Keywords: biology, botanical, botany, coloured, european, flora, male gamete, mediterranean, nature, olea europaea, olive tree, pitted, plant, plant reproduction, plants, pollen grain, reproduction, reproductive, scanning electron micrograph, sculpted, sem, surface, wildlife

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