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Q. what are the parts of typical root? ​

Answer 1

Answer:

Roots are vital to the plant in a variety of ways: they provide stability, store nutrients, and act as the primary source of water and nutrient acquisition. In general, the root comprises all parts of the plat that lie beneath the soil, even though most of the tissues of the plant, including the vascular tissues, are continuous throughout the root and shoot (stem, leaves, flowers, etc.).

There are three different types of root structure. A taproot, characteristic of dicots, is a single dominant root from which smaller, secondary roots extend. In a fibrous root system, composed of many small roots, no single root dominates. Taproots stretch deep into the soil, while fibrous 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.

Root Hairs

Root hairs are extensions of the epidermal cells on the surface of the root, and are continually being sloughed off by the soil and regrown. The tiny root hairs, which have a huge total absorptive surface area, have evolved in order to allow the plant to take in as much water from the soil as possible. Not surprisingly, most of the water and minerals taken in by the plant are absorbed by the root hairs. Water and dissolved minerals from the soil move into the root hairs by osmosis and travel into the xylem found in the root, where they are transported to the rest of the plant. The movement of fluids from the root hairs to the xylem can occur through one of two conductive pathways-- apoplast or symplast. With the apoplast, water travels along cell walls and through intercellular spaces from the root surface to the core. The symplast route, on the other hand, moves fluids through the cells, via channels that connect their contents.

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Answer 2

Answer:

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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