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Collenchyma cells
found just below epidermis; provide flexible support to the plant
Sclerenchyma tissue
cells that have thick secondary walls that makeup fibers and hard dead cells in pears. Also used for support.
Xylem
complex tissue that transports water and nutrients from root throughout the plant
Phloem
complex tissue that transports sugar in solution from the leaves throughout the plant
Dermal tissue
outermost layer of cells of all young plant organs, usually one cell thick
Transpiration
Evaporation of water from the leaves of a plant
Vascular tissue
Plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body.
Cuticle
A waxy covering on the surface of stems and leaves that acts as an adaptation to prevent desiccation in terrestrial plants.
Guard cells
The two cells that regulate the opening and closing of the stomata.
Stomata
Small openings on the underside of a leaf through which oxygen and carbon dioxide can move
Root Hairs
thin growths that increase the surface area of roots to absorb more water
Secondary growth
Secondary growth: produced by lateral meristems, thickening the roots and shoots of woody plants.
Primary growth
Growth produced by apical meristems, which lengthen stems and roots.
parenchyma
Fundamental tissue composed of thin-walled living cells that function is for storage of materials and photosynthesis.
Cohesion
Attraction between molecules of the same substance
Adhesion
An attraction between molecules of different substances
capillary action
The tendency of water to rise in a thin tube because of cohesion and adhesion of water.
Transpiration
Evaporation of water from the leaves of a plant
