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The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems. It is found in woody and many herbaceous dicots, gymnosperms and some monocots (monocots usually lack secondary growth). It is one of the plant's meristems – the series of tissues consisting of embryonic disk ...
Root growth is often stimulated by another hormone, called ethylene, which is prevented from being produced in the roots when auxin levels are high. Additionally, it was found that low levels of auxin are actually found to stimulate the growth and elongation of the root system, even without the presence of ethylene. [ 1 ]
After the primary growth, lateral meristems develop as secondary plant growth. This growth adds to the plant in diameter from the established stem but not all plants exhibit secondary growth. There are two types of secondary meristems: the vascular cambium and the cork cambium. Vascular cambium, which produces secondary xylem and secondary ...
Lack of the plant hormone auxin can cause abnormal growth (right) Plant hormones (or phytohormones ) are signal molecules , produced within plants , that occur in extremely low concentrations . Plant hormones control all aspects of plant growth and development, including embryogenesis , [ 1 ] the regulation of organ size, pathogen defense, [ 2 ...
Lateral roots are one of the most important tissues in a plant's anatomical structure. They provide physical support and uptake water and nutrients for growth. Before the emergence of lateral roots in the morphogenetic process, a new lateral root primordium which consists of primordial cells is formed.
In contrast, a growth process that involves thickening of stems takes place within lateral meristems that are located throughout the length of the stems. The lateral meristems of larger plants also extend into the roots. This thickening is secondary growth and is needed to give mechanical support and stability to the plant. [4]
On top of the gradual growth of the plant, the image reveals the true meaning of phototropism and cell elongation, meaning the light energy from the sun is causing the growing plant to bend towards the light aka elongate. Plant growth and development are mediated by specific plant hormones and plant growth regulators (PGRs) (Ross et al. 1983). [10]
This meristem is responsible for the linear growth of an organ. 2.Secondary meristem. Lateral meristem: Cells which mainly divide in one plane and cause the organ to increase in diameter and girth. Lateral meristem usually occurs beneath the bark of the tree as cork cambium and in vascular bundles of dicotyledons as vascular cambium. The ...