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Tobacco leaf, SEM C016 / 9465
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Tobacco leaf, SEM C016 / 9465
Tobacco leaf. Coloured scanning electron micrograph (SEM) of the underside of a winged tobacco (Nicotiana alata) leaf, showing trichomes (long) and a stomata (small, oval). Trichomes are tiny hair-like structures that can be glandular, secreting oils or other substances, or structural for defence. Stomata are pores that are the site of gaseous exchange in the plant. The opening and closing of the stomata is controlled by semicircular guard cells (dark), which swell and become turgid to close the openings
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Media ID 9246123
© AMI IMAGES/SCIENCE PHOTO LIBRARY
Colored Guard Cell Hair Hairs Plants Pore Stoma Stomata Structures Surface Structure Trichome Trichomes Underside Cells
EDITORS COMMENTS
This print showcases the intricate beauty of a tobacco leaf, captured through a scanning electron microscope. The image reveals the mesmerizing details of the leaf's underside, highlighting two key features - trichomes and stomata. Trichomes, which resemble tiny hair-like structures, play multiple roles in the life of this plant. Some trichomes are glandular and secrete oils or other substances, while others serve as structural defense mechanisms. These delicate structures add texture and depth to the leaf's surface. Meanwhile, scattered across the leaf are small oval-shaped openings known as stomata. These pores act as vital sites for gaseous exchange within the plant. The opening and closing of these stomata is controlled by semicircular guard cells that swell and become turgid when it's time to close them off. The vibrant colors in this photograph enhance our understanding of botanical anatomy and highlight nature's remarkable complexity at a microscopic level. It offers us a glimpse into an unseen world where even seemingly ordinary leaves possess extraordinary intricacies. Through this stunning visual representation, we gain insight into how plants adapt to their environment and protect themselves from potential threats. This image serves as a reminder that there is so much more to discover about our natural surroundings if we take the time to explore its hidden wonders.
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