Sunflower pollen grains, SEM C018 / 0309

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Sunflower pollen grains, SEM C018 / 0309

Sunflower pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from the sunflower (Helianthus annuus). The grains have a spiked outer wall (exine), which assists in their dispersal to the female parts of other sunflowers by improving their adherence to pollinating insects. The characteristic surface of pollen grains is used by botanists to recognise and classify plants. Pollen grains are the male sex cells of a flowering plant

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Media ID 9237541

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Asteraceae Colored Compositae Dispersal Exine Gamete Gametes Grain Grains Green Background Helianthus Annuus Outer Wall Pollen Pollen Grain Reproduction Reproductive Sex Cell Spiked Spikes Spiky Sunflower Cells

EDITORS COMMENTS
This print showcases the intricate beauty of sunflower pollen grains. Under the scanning electron microscope, these male sex cells from the Helianthus annuus species reveal a stunning array of colors and textures. The spiked outer wall, known as exine, plays a crucial role in their reproductive journey. These spiky structures aid in dispersal by enhancing adherence to pollinating insects, ensuring successful fertilization with female parts of other sunflowers. Botanists rely on the characteristic surface features of pollen grains like these to identify and classify various plant species. The vibrant hues and fascinating patterns captured in this image not only highlight the biological significance but also serve as a visual feast for nature enthusiasts. Against a green background, each grain stands out distinctly with its own unique arrangement of spikes. This photograph is a testament to the wonders that lie within our natural world—where even seemingly tiny particles possess an extraordinary level of complexity and purpose. It reminds us that life's most essential processes often occur at microscopic scales, contributing to the remarkable diversity we observe around us.

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