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BJU Life science

Bob Jones Life Science Chapter 10

kingdom Plantae
botany The study of plants
node A region on a stem where leaf is or was attached.
taproot system A type of root system having one or a few main roots that are thicker and longer than the other roots of the plant.
fibrous root system A type of root system having a cluster of roots that are about equal in size.
woody stem A harder, non-flexible type of plant stem.
herbaceous stem Softer, more flexible, and often green plant stems.
vein In plants, the vascular tissues in leaf blades.
xylem The plant tissue characterized by long hollow cells that carry water.
phloem A plant tissue that conducts dissolved food in a plant.
vascular bundle A strand of vascular tissue (xylem and phloem) in the leaves, young plants, and non-woody stems.
fiber Long thick-walled cells that function to support a plant.
epidermis A tissue that serves as a protective covering layer in plants
stomata (sing. stoma) Openings between guard cells of a leaf that permit water vapor and gases to pass into and out of the leaf.
guard cell One of the cells that surround a stoma on a plant leaf and control the opening and closing of the stoma
transpiration The release of water from plant leaves through stomata
palisade layer The upper layer of leaf tissue that consists of tall, thin, closely packed cells that carry on the majority of photosynthesis
spongy layer The lower layer of leaf tissue consisting of loosely packed cells that carry on photosynthesis and have many air spaces between them
hormone A chemical produced by living cells that is transported to other body tissues where it causes a specific effect
tropism The growth of plants in response to external stimuli such as light (phototropism), gravity (gravitropism), and touch (thigmotropism).
phototropism The growth and movement of a plant part in response to light
thigmotropism The growth and movement of a plant part in response to touch
gravitropism The growth and movement of a plant part in response to gravity
photoperiodism The response of a plant to changes in the length of light and dark periods
Created by: heidio