Dyers greenweed stem, light micrograph
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Dyers greenweed stem, light micrograph
Dyers greenweed stem. Polarised light micrograph of a transverse section through the stem of a dyers greenweed (Genista tinctoria) plant. This stem has eight ribs with deep grooves with hairs, which reduce water loss through transpiration. Under the thick-walled epidermis (outer layer) with thick cuticle are layers of palisade-like cells (red-brown) containing chloroplasts (chlorenchyma) for photosynthesis. The vascular cylinder is made up of (from outside inwards) a ring of phloem sieve tubes (red black alternating patches), a ring of cambium (brown black), and xylem (blue white). In the centre of the stem is the pith made up of large celled parenchyma tissue (white-blue). Magnification: x103 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6300247
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Cambium Cell Biology Cuticle Cytology Epidermis Palisade Mesophyll Parenchyma Phloem Pith Plant Structure Polarised Light Sieve Tube Stem Support Supportive Tubes Vascular Bundle Xerophyte Xerophytic Xylem Cells Dyers Greenweed Genista Tinctoria Light Micrograph Light Microscope Section Sectioned
EDITORS COMMENTS
This print showcases a detailed view of a dyers greenweed stem under polarised light micrograph. The stem, belonging to the Genista tinctoria plant, exhibits eight ribs with deep grooves and hairs that serve as an ingenious defense mechanism against water loss through transpiration. The outer layer consists of a thick-walled epidermis adorned with a thick cuticle for added protection. Beneath this protective layer lies layers of palisade-like cells in striking red-brown hues. These cells contain chloroplasts, known as chlorenchyma, which play a crucial role in photosynthesis. Moving towards the center of the stem, we encounter the vascular cylinder composed of phloem sieve tubes alternating between red and black patches, followed by cambium in brown-black shades and xylem depicted in blue-white tones. At the heart of this intricate structure lies the pith formed by large celled parenchyma tissue portrayed in serene white-blue shades. This mesmerizing image provides us with an insight into the complexity and beauty found within plant biology. With its meticulous detail captured at 103 times magnification when printed 10 centimeters wide, this print from Science Photo Library offers both scientific enthusiasts and nature lovers an opportunity to appreciate the wonders hidden within botanical structures like never before.
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