Secondary meristem located in the cortex produces layers of cork cells as part of secondary growth in plants. This process adds to the thickness and protective function of the outer layer of branches and stems.
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Suberin, present in the walls of cork cells, provides a waterproof barrier that prevents the movement of gases and water through the outer layer of the plant.
Cork is composed of dead cells that are compactly arranged without intercellular space. These cells have walls containing suberin, which makes them impervious to gases and water.
Xylem fibres provide structural support to the plant, reinforcing the xylem tissue and helping to maintain the plant’s rigidity and stability, essential for standing upright and withstanding external forces.
Xylem parenchyma stores food and nutrients within the vascular tissue, providing essential metabolic support and maintaining the health and functionality of the xylem in the plant.
In the vascular bundle of a plant stem, different types of cells can be observed, including tracheids, vessels, xylem parenchyma, and xylem fibres.
The presence of vascular tissue is a distinctive feature of complex plants that has facilitated their survival in terrestrial environments.
Xylem and phloem are conducting tissues that constitute vascular bundles in plants. Xylem transports water and minerals from roots to the rest of the plant, while phloem transports sugars and other organic compounds produced through photosynthesis to various parts of ...
Cells in complex tissues coordinate to perform a common function. In xylem and phloem, for instance, different cell types collaborate to transport water, minerals, and nutrients throughout the plant.
Yes, as plants age, the outer protective tissue undergoes changes. A strip of secondary meristem in the cortex forms layers of cork cells, which constitute the outer layer of the branch and stem.