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may form as the outermost layer of the cortex, slows water and nutrient
loss. Present in plants in water limited environments
Root cap function
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protects apical meristem, amyloplasts are pulled down by gravity which
stimulates root growth in the downward direction
Senescence
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the condition or process of deterioration with age
ER functions
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synthesizing proteins, lipids, regulating calcium, linked to lumen (tubes
throughout organism's cells)
Cell maturation region function
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above elongation region, primary tissues mature into secondary tissues,
root hairs form
Root epidermis
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outer absorbing layer, consisting of only a single layer of cells that covers
the entire surface of the root except the root cap, surface increased by
root hairs
2 types Vascular tissue
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xylem and phloem
Angiosperm
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flowering plants, enclosed or vesseled seed; divided into monocotyledons
and dicotyledons
Pericycle
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only in roots, one or more layers of cells surround the vascular tissues
7 Dicot characteristics