PLANT CELLS and TISSUES

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PLANT CELLS and TISSUES

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PLANT CELLS and TISSUES

PLANT CELLS

PLANT TISSUES CELLS that work with other cells for a COMMON FUNCTION form TISSUES

MERISTEMATIC TISSUES APICAL – growth in length

MERISTEMATIC TISSUES LATERAL – growth in width or girth

MERISTEMATIC TISSUES INTERCALARY – growth from the base of nodes

MERISTEMATIC TISSUES Undifferentiated cells undergoing ACTIVE GROWTH

PERMANENT TISSUES SIMPLE – contain only one type of cell Collenchyma Parenchyma Collenchyma Sclerenchyma

PERMANENT TISSUES - Simple Parenchyma Collenchyma Sclerenchyma Fibers Sclereids

PERMANENT TISSUES COMPLEX – two or more different types of cells VASCULAR tissues XYLEM – conducts WATER PHLOEM – conducts FOOD DERMAL tissues EPIDERMIS – single cell layer CORK & CORK CAMBIUM Meristem and outer bark of woody plants

PERMANENT TISSUES - Complex VASCULAR tissues PHLOEM – conducts FOOD Sieve tubes Companion cells XYLEM – conducts WATER Vessels Tracheids

PERMANENT TISSUES - Complex DERMAL tissues EPIDERMIS Cuticle Guard cells and stomata Trichomes

PERMANENT TISSUES - Complex DERMAL tissues CORK & CORK CAMBIUM Meristem and outer bark of woody plants