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Why is the region of elongation of the root relatively shorter than that of the stem?
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How does auxin produce phototropism?
Auxin accumulates on the lower surface of the root and inhibits elongation of cells in that region.
Which of the root functions is carried out by root hairs?
the function known as elongation
What is the function of elongation?
The cells produced by mitosis undergo a period of elongation in the direction of the axis of the root. It is at this time that they are sensitive to gravity and respond with gravitropism.
New root cells become longer mainly by?
Auxins, which are plant hormones, are responsible for cell elongation.
What is the plant root system made of?
The plant root system is made of various regions of tissues. These are root cap at the apex, the meristem of actively dividing cells, root hair zone and cell elongation and maturation zone having vascular tissue etc.
Does the elongation of the cells in the region of elongation increase the root length?
no
What is the region of elongation's function?
The cells produced by mitosis undergo a period of elongation in the direction of the axis of the root. It is at this time that they are sensitive to gravity and respond with gravitropism.
How does auxin produce phototropism?
Auxin accumulates on the lower surface of the root and inhibits elongation of cells in that region.
Which of the root functions is carried out by root hairs?
the function known as elongation
What zone follows the zone of cells division in a root tip?
Elongation
What is the function of elongation?
The cells produced by mitosis undergo a period of elongation in the direction of the axis of the root. It is at this time that they are sensitive to gravity and respond with gravitropism.
What are roots of the region?
The Meristematic Region or Growing PointThis region occurs immediately behind the root cap. The Meristematic region consists of meristematic tissue and is protected by the root cap. The cells are very activeand divide rapidly to form new cells which differentiate later to form more specialized root tissues. The cells of this region also replace the cells rubbed-off from the root cap and provide additional cells for the next region.FunctionThis is the region where the cells divide and where additional cells are provided for the zone of elongation.The Region of ElongationThe cells formed in the meristematic region undergo rapid growth in length. This causes the root to elongate and penetrate deeper into the soil in search for water and mineral salts. The meristematic and elongation zones are also referred to as the region of growth.FunctionIn this region the cells undergo rapid enlargement,i.e. the cells undergo rapid growth in length.The Root-hair RegionThe root hair region occurs a short distance above the region of elongation. Here a large number of fine, hair-like outgrowths are formed. The root hairs arise from the epidermal tissue of the root and are called root hairs. The root hairs are short and short-lived and develop on theprimary and secondary roots. A root-hair consists of the following parts: a thin cell wall, a thin lining of cytoplasm which contains thenucleus and a comparatively large vacuole containing cell sap.FunctionThe main function of the root hairs is to increase the area of absorption of the root.The Mature RegionThe mature region is situated above the root hair region. Here the root becomes thicker and secondary or lateral rootsare developed. The secondary roots in turn rebranch to form tertiary roots. Each lateral branch has its own cap, root hairs, meristematic, elongation and mature regions. The roots in this region are covered by a protective cork layer .FunctionsIn this region the cells undergo differentiation into specialized cells,(e.g. xylem and phloem).It also serves to anchor the plant.febbie
What are the four regions of roots?
the four regions of the root are root cap, cell division, elongation and specialization
What are the growth regions of roots?
Roots mainly grow towards regions with higher concentrations of nutrients, water, and oxygen. They also grow away from areas with high levels of toxins or unfavorable soil conditions. Additionally, roots grow towards gravity, a phenomenon known as positive geotropism, with the root tip sensing gravity and growing downwards.
What are the three growth zones of roots?
This is the organization of roots from the base closest to the plant itself to the tip of the root: zone of maturation - cells specialize to carry particular functions (root hairs present) zone of elongation - rows of newly produced cells elongate zone of cell division - new cells being produced root cap - covers the growing tip
New root cells become longer mainly by?
Auxins, which are plant hormones, are responsible for cell elongation.
What portion of a root gets elongated?
The zone of elongation occurs when the cells in this zone stretch and lengthen as small vacuoles within the cytoplasm coalesce and fill with water. One or two large vacuoles occupy almost all of the cell volume in fully elongated cells. Cellular expansion in this zone is responsible for pushing the root cap and apical tip forward through the soil.
