Pollen from Red Campion flower

Pollen from Red Campion flower

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Caption: Scanning electron micrograph showing a single pollen grain from the flower of a Red Campion, Silene dioica. . These spherical pollen grains have many pores on their outer wall (multiporate) called germinal pores; each pore is capped by an operculum (lid) covered with wart-like processes (verra). Between the pores the surface appears as a network of ridges & irregular sized openings. When the pollen, containing the male gametes, lands on the stigma of the flower, it germinates & a pollen tube will grow out of one of the pores down to the ovary. The male nuclei travel down this tube, fertilize the ovules & a seed is formed. Magnification: x4250 (at 10x8 size).

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Keywords: botany, nature, plant, plants, pollen, red campion, reproduction, reproductive, silene, silene dioica, type

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