Assertion: cambium's surface | /r/CapableOf | help protect the leaf
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text: Start over Prentice Hall Biology A B meristematic tissue plant tissue found only in the tips of shoots and roots; responsible for plant growth apical meristem a group of undifferentiated cells that divide to produce increased length of stems and roots epidermal cell the cell that makes up the dermal tissue, which is the outer covering of a plant cuticle a thick, waxy layer on exposed outer surfaces of cells that protects them against water loss and injury trichome tiny cellular projection on the surfaces of some leaves that helps protect the leaf and also gives it a fuzzy appearance vessel element xylem cell that forms part of a continuous tube through which water can move sieve tube element the phloem cell that is joined end-to-end to similar cells to form a continuous sieve tube companion cell a phloem cell that surrounds sieve tube elements parenchyma a type of ground tissue cell with a thin cell wall and large central vacuole collenchyma a type of ground tissue cell with a strong, flexible cell wall; helps support larger plants sclerenchyma a type of ground tissue cell with an extremely thick, rigid cell wall that makes ground tissue tough and strong taproot the primary root found in some plants that grows longer and thicker than other roots fibrous root the part of a root system in which roots branch to such an extent that no single root grows larger than the rest root hair tiny projection from the outer surface, or epidermis, of a root cortex a spongy layer of ground tissue just inside the epidermis of a root endodermis a layer of cells that completely encloses vascular tissue vascular cylinder the central region of a root that includes the vascular tissue - zylem and phloem root cap a tough structure that protects a root as it forces its way through the soil Casparian strip a waterproof strip that surrounds plant endodermis cells node the point on the stem where a leaf is attached internode the region between nodes on plant stems bud a plant structure containing undeveloped tissue that can produce new stems and leaves vascular bundle a plant stem structure that contains xylem and phloem tissue pith parenchyma cells inside the ring of vascular tissue in dicot stems primary growth the type of plant growth that occurs at the tips of roots and shoots secondary growth the pattern of plant growth in which stems increase in width vascular cambium lateral meristematic tissue that produces vascular tissues and increases the thickness of the stem over time cork cambium lateral meristematic tissue that produces the outer covering of stems heartwood