Stony cells - Sklereidy - dead parenchymal cells with uniformly thickened woody walls.
Cell wall - in prokaryotes and plant - polysaccharide layer outside the plasma cell
membrane covering the entire cell and its protoplast accommodating. Cell gives the cell
membrane and regulates a certain form water exchange. Cell wall between the two plant cells
consists of a central median plate formed begins to divide the parent cell, and two peripheral
layers of the primary shell.
Collenchyma - mechanical tissue of living cells with plastic water-based coatings, giving
the authorities the necessary strength of the plants.
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