Pollen tubes of lily pollen, SEM

Pollen tubes of lily pollen, SEM

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Caption: Pollen tubes of lily pollen, coloured scanning electron micrograph (SEM). Two pollen grains (brown) have sprouted pollen tubes (orange). A pollen tube is produced by a pollen grain when it lands on the pistil (female part) of a flower. The tube burrows through the pistil to the ovaries, carrying the male sex cells to them for fertilisation. Magnification: x550 when printed 10cm high.

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Keywords: biological, biology, botanical, botany, coloured, duo, false-coloured, flower, grains, lilium sp., nature, pair, pistil, plant, plants, pollen grain, pollen tube, pollinating, reproduction, reproductive, scanning electron micrograph, scanning electron microscope, sem, tubes, two

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