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20 Cards in this Set
- Front
- Back
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plant tissue found only in the tips of shoots and roots; responsible for growth |
Meristematic Tissue |
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thick, waxy layer that protects plants against water loss and injury |
Cuticle |
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tiny projections from the outer surface of a root |
Root Hair |
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tough structure that protects a root as it forces it's way through the soil |
Root Cap |
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plant structure containing undeveloped tissue that can produce new stems and leaves |
Bud |
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plant stem structure that contains xylem and phloem tissue |
Vascular Bundle |
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type of plant growth that occurs at the tips of roots and shoots |
Primary Growth |
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pattern of plant growth in which stems increase in width |
Secondary Growth |
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older xylem near the center of a woody stem that no longer conducts water |
Heartwood |
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area in plants that surrounds heartwood and is active in fluid transport |
Sapwood |
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tree structure that includes all tissues outside the vascular cambium including phloem, the cork cambium, and the cork |
Bark |
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thin, flattened section of a plant leaf that collects sunlight |
Blade |
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thin stalk by which a leaf blade is attached to a stem |
Petiole |
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layer of tall, column-shaped mesophyll cells just under the upper epidermis of a leaf |
Palisade Mesophyll |
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loose tissue beneath the palisade layer of a leaf; has many air spaces between cells |
Spongy Mesophyll |
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opening in the underside of a leaf that allows carbon dioxide and oxygen to diffuse into and out of the leaf |
Stoma |
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specialized cell in the epidermis of plants that controls the opening and closing of the stomata by responding to changes in water pressure |
Guard Cell |
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loss of water from a plant through leaves |
Transpiration |
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attraction between molecules of different substances; attraction between unlike molecules |
Adhesion |
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tendency of water to rise in a thin tubw |
Capillary Action |
