Scots pine pollen grain, SEM

Scots pine pollen grain, SEM

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Caption: Scots pine (Pinus sylvestris) pollen grain, coloured scanning electron micrograph (SEM). The pollen grain has two air-filled, wing-like bladders (pink), which are extensions of the pollen grain's wall. These 'wings' help the wind-dispersed pollen to float on the air. Pollen grains are the male gametes (sex cells) of a plant. Magnification: x1740 when printed 10 centimetres wide.

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Keywords: 1, air sac, air sacs, biological, biology, bladder, bladders, botanical, botany, coloured, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, false-coloured, flora, male, nature, one, pinus sylvestris, plant biology, plant reproduction, pollen grain, pollination, reproductive part, scanning electron micrograph, scanning electron microscope, scots pine, sem, single, structure, tree, wind dispersal, wing, winged, wings

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