Chloroplasts in cells of Zinnia
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Chloroplasts in cells of Zinnia
Chloroplasts in mesophyll cells of leaf. Coloured Transmission Electron Micrograph (TEM) of meso- phyll cells in a young leaf of Zinnia elegans. These cells contain large numbers of chloroplasts (green), and are therefore active centres of photosynthesis. The chloroplasts are situated on the edge of each cell; starch granules (pink) inside them are a form of stored sugar. At the centre of each cell is a large vacuole (blue) filled with cell sap. The nucleus is coloured red. Mesophyll cells are loosely arranged cells in the leaf, with large air spaces (white) between them, allowing for gas exchange during photosynthesis. Magnification: x2, 000 at 6x4.5cm size
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Media ID 6285050
© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY
Botanical Science Chloroplast Chloroplasts Colour Electron Micrograph Mesophyll Photosynthesis Plant Structure Plastid Plastids Starch Transmission Vacuole Zinnia Elegans
EDITORS COMMENTS
This print showcases the intricate beauty of chloroplasts in the cells of Zinnia, a flowering plant. The image, captured using Coloured Transmission Electron Micrograph (TEM) technology, provides a close-up view of mesophyll cells in a young leaf of Zinnia elegans. The vibrant green coloration represents the numerous chloroplasts present within these active centers of photosynthesis. These specialized organelles are responsible for converting sunlight into energy through the process of photosynthesis. Within each chloroplast, pink starch granules can be observed, serving as stored sugar reserves. At the center of each cell lies a large vacuole filled with blue-colored cell sap. This fluid-filled space plays an essential role in maintaining turgidity and providing structural support to the leaf. Mesophyll cells are arranged loosely within the leaf and feature large air spaces depicted as white areas between them. These air spaces facilitate gas exchange during photosynthesis by allowing carbon dioxide to enter while oxygen is released. Highlighted in red is the nucleus, which contains genetic material necessary for cellular functions and growth. Overall, this visually stunning photograph offers insight into plant structure and highlights the remarkable complexity that exists within even seemingly simple components such as leaves.
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