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Unformatted text preview: roots spread out close to the surface. Adventitious roots develop on vines after embryonic development and help plants cling to substrates other than the soil, such as a tree trunks. Typical roots contain three different sections, or zones: the meristematic zone, the zone of elongation, and the zone of differentiation. In the meristematic zone, named after the apical meristem, the plant cells undergo rapid mitotic division, creating new cells for root growth. These new cells, once they enter the zone of elongation, begin,unsurprisingly, to elongate, furnishing the root with added length. The zone of differentiation containsmature, specialized cells, such as phloem, xylem, and root hairs....
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- Winter '09