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Plant Cells and Tissues, Tissue types, Haya Almosa - Coggle Diagram
Plant Cells and Tissues
Cell types
Collenchyma
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Have unevenly thickened cell walls, which allow the cells to stretch and be flexible
Sclerenchyma
When they mature, they lack cytoplasm and other living components, but leaving their thick, rigid cell walls.
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Fibers are needle shaped, when stacked together they form a tough elastic tissue
Parenchyma
Most flexible, thin-walled cells.
Can undergo cell division when mature, allowing them to repair damaged parts of plants
Tissue types
Dermal tissue
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Some epidermal cells have hairlike projections called trichomes, give plant leaves fuzzy appearance which prevent insect and animal predation.
Root hairs are fragile extensions of root epidermal cells to increase root’s surface area of absorption.
Ground tissue
Consists of parenchyma, collenchyma, and sclerenchyma cells.
Functions include photosynthesis, storage, and support.
Plant tissues that are not meristematic, dermal, or vascular tissues are ground tissues.
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Meristematic tissue
Meristematic tissues make up meristems, or regions of rapidly dividing cells which produce new cells for plants
Intercalary meristem cells: found in monocot stems only, produces new cells that result in an increase in stem or leaf length.
Apical meristem cells: tissues at the tips of roots and stems, responsible for primary growth.
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