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Parenchyma is a versatile ground tissue that generally constitutes the "filler" tissue in soft parts of plants. It forms, among other things, the cortex (outer region) and pith (central region) of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds.
Cross-section of a flax plant stem: 1. Pith 2. Protoxylem 3. Xylem I 4. Phloem I 5. Sclerenchyma 6. Cortex 7. Epidermis. In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. [1]
The secondary cell wall is a structure found in many plant cells, located between the primary cell wall and the plasma membrane.The cell starts producing the secondary cell wall after the primary cell wall is complete and the cell has stopped expanding. [1]
The pericycle is a cylinder of parenchyma or sclerenchyma cells that lies just inside the endodermis and is the outer most part of the stele of plants. [citation needed] ...
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Sclereids are created through belated sclerosis of parenchyma cells or can arise from sclereid primordia that are individualized early in development. Sclerification typically involves thickening of the cell wall, increasing rigidity.
Cork cambium of woody stem ().It is different from the main vascular cambium, which is the ring between the wood on the inside (top) and the red bast outside it.. Cork cambium (pl.: cambia or cambiums) is a tissue found in many vascular plants as a part of the epidermis.
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