Scots pine pollen grains, SEM

Scots pine pollen grains, SEM

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Credit: POWER AND SYRED/SCIENCE PHOTO LIBRARY

Caption: Scots pine tree pollen grains. Coloured scanning electron micrograph (SEM) of Scots pine (Pinus sylvestris) pollen grains. The pollen grains consist of a base (yellow) with 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 air. Each pollen grain contains a male gamete (reproductive cell) that is intended to fertilise ovules or eggs (the female gametes) of another flower, initiating the formation of a seed.

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Keywords: biological, biology, botanical, botany, cells, coloured, false-colour, false-coloured, fertilisation, fertilization, flora, flower, flowering, fruit, gamete, gametes, male, nature, part, parts, pine, pinus sylvestris, plant, plant anatomy, plants, pollen, pollen grain, pollen grains, pollination, reproduction, reproductive, scanning electron micrograph, scanning electron microscope, scots pine, sem, sex cell, structure, type, wind, wind dispersed, winged

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