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SEM of daisy pollen B786 / 0524
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SEM of daisy pollen B786 / 0524
Daisy pollen. Coloured scanning electron micrograph (SEM) of pollen grains of a common Daisy (Bellis perennis). The outer wall (exine) has many small spiky projections. These get caught in the body hairs of insects. The insects then fly to other flowers to feed and so pollen is transferred. Pollen contains the male reproductive cells of a plant. When the pollen grain, containing the male gametes, lands on the stigma of a flower, it germinates. A pollen tube grows out from the germinal pore, down through the stigma, to the ovary. The male nuclei pass down the tube, fertilize the ovules and seed is formed. Magnification: x1, 200 at 5x7cm size. x3000 at 5x7ins
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Media ID 9194003
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Bellis Perennis Daisy Magnified Image Microscopic Photos Plants Pollen Reproduction Reproductive Subjects Type
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This print showcases the intricate beauty of daisy pollen at a microscopic level. The colored scanning electron micrograph (SEM) reveals the fascinating structure of pollen grains from a common Daisy (Bellis perennis). Each grain is encased in an outer wall, known as exine, which is adorned with numerous small spiky projections. These delicate spikes play a crucial role in the plant's reproductive process. Insects unwittingly become essential pollinators as they brush against these spiky projections and inadvertently carry them on their body hairs. As the insects fly to other flowers seeking nourishment, they unknowingly transfer this precious cargo of pollen grains. Pollen serves as nature's vehicle for delivering male reproductive cells to female flowers. Once a pollen grain lands on the stigma of a flower, it begins its transformative journey. Germination occurs within the grain, prompting the growth of a slender tube called a pollen tube. This remarkable structure extends down through the stigma and reaches all the way to the ovary. Within this tiny tube, male nuclei travel downwards towards their destination - fertilizing ovules along their path. This vital union between male and female reproductive cells ultimately leads to seed formation. Magnified 1,200 times at 5x7cm size or an astonishing 3,000 times at 5x7ins size, this image offers us an awe-inspiring glimpse into one of nature's most fundamental processes – plant reproduction.
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