Vascular plant parts {root, plant}| can anchor plants to substrates, hold plants upright, absorb water and minerals, and store food. Roots have caps, elongation zones, root hairs, and mature root near stem.
Tulips, onions, and garlic have roots {bulb}.
Roots have growing points {cap, root} at tips.
Roots have regions {elongation zone} {zone of elongation} in which cells lengthen by absorbing water.
Roots have mature cells with hairs {root hair}|, for water and mineral absorption.
Roots have regions {maturation zone} {zone of maturation} of mature cells with root hairs, for water and mineral absorption.
Root tissue layers are outer, middle {cortex, plant}, and inner {endodermis} {cambium, root}. Cortex is thickest.
In old root parts, regions {pericycle} can develop into new side roots or into new xylem and phloem.
Root centers {stele, root} have phloem, xylem, pericycle, and cambium.
Plants can have roots {adventitious root}| that grow from stem or leaves.
Plants can have many similar-size roots {diffuse root} or one large main root {taproot}|.
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Date Modified: 2022.0225