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The cork is an external, secondary tissue that is impermeable to water and gases. Cork cell walls also contain a chemical called suberin, a waxy substance which protects the stem against water loss, invasion of insects into the stem and prevents infections by bacteria and fungal spores.
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What are characteristics and uses of cork cells?
Cork is the outer protective tissue of older stems and roots. The mature cork cells become dead and filled with tannis, resins and air.
How does the corck act as a protective tissue?
as plants grow older, the outer protective tissue undergoes certain changes. a strip of secondary meristem replaces the epidermis of the stem. cells on the outside are cut off from this layer. this forms the several layer thick cork or the bark of the tree. cells of cork are dead and compactly arranged without intercellular spaces. they also have a chemical called suberin in their walls that makes them impervious to gases and water.
Protective coat made of cork and cork cambium?
Its the Periderm.
What tissues make up wood and bark?
phellem(cork), phellogen(cork cambium), phelloderm(secondary cortex), primary phloem and secondary phloem constitutes BARK
What is the use of cork cells?
Cork cells form a protective layer around plant stems.
How does cork acts as a protective tissue?
Cork is an external, secondary tissue that is impermeable to water and gases, and is also called the phellem. The cork is produced by the Cork cambium which is a layer of meristematically active cells which serve as a lateral meristem for the periderm. The cork cambium, which is also called the phellogen, is normally only one cell layer thick and it divides periclinally to the outside producing cork. The phelloderm, which is not always present in all barks, is a layer of cells formed by and interior to the cork cambium. Together, the phellem (cork), phellogen (cork cambium) and phelloderm constitute the periderm. Cork cell walls contain suberin, a waxy substance which protects the stem against water loss, the invasion of insects into the stem, and prevents infections by bacteria and fungal spores.
Whats a protective tissue?
Protective tissue can be found on the outermost layer of a plant. This tissue is covered with cutin and protects underlying tissues within the plant.
What kind of tissue forms the majority of leaf?
Protective tissue
What tissue give rise to the cork cambium?
The parenchyma cells tissues give rise to the cork cambium.
What type of tissue is present in the bark of a tree?
Protective tissue
Are cork cells part of epidermal tissue system?
yes
Is cork cambium a living tissue?
no, its comprised of dead cells
