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Bio2, Ch 22 Vocab


Parenchyma cell spherical, thin-walled cell found throughout most plants that can function in photosynthesis, gas exchange, protection, storage, and tissue repair and replacement.
Collenchyma cell Often elongated plant cell that provides flexibility for the plant, support for surrounding tissues, and functions, in tissue repair and replacement.
Sclerenchyma cell Plant cell that lacks cytoplasm and other living components when mature, leaving thick, rigid cell walls that provide support and function in transport of materials.
Meristem Region of rapid division in plant; produces cells that can develop into many different types of plant cells.
Vascular Cambium Thin cylinder of meristematic tissue that produce new transport cells.
Cork Cambium Meristematic tissue that produces cells with tough cell walls that form the protective outside layer on stems and roots.
Epidermas Dermal tissue that makes up a plant's outer covering in humans and some other animals, the outer superficial layer of skin made up of epithelial cells.
Guard Cell One of a pair of cells that function in the opening and closing of a plant's stomata by changes in their shape.
Xylem Vascular plant tissue that transports water and dissolved minerals away from the roots throughout the plant and is composed of vessel elements and tracheids.
Vessel Element Elongated tubular plant cell that forms xylem strands (vessel sand conducts water and dissolved substances.)
Tracheid Long, cylindrical plant cell in which water passes from cell to cell though pitted ends.
Phloem Vascular plant tissue composed of sieve tube members and companion cells that conducts dissolved sugars and other organic compounds from the leaves and stems to the roots and from the roots to the leaves and stems.
Sieve Tube Member non nucleated, cytoplasmic cell of the phloem.
Companion Cell Nucleated cell that helps the mature sieve tube member function in transporting dissolved substances in the phloem of vascular plants.
Ground Tissue Plant tissue consisting of parenchyma, collenchyma, and sclerenchyma.
Root Cap Layer of parenchyma cells that cover the root tip and helps protect root tissues during growth.
Cortex Layer composed of ground tissues between the epidermis and vascular tissue of a root.
Endodermis Dermal tissue that makes up a plant's outer covering in humans and some other animals, the outer superficial layer of skin made up of epithelial cells.
Palisade Mesophyll
Spongy Mesophyll
Nastic Response
Created by: Jsmith3