In dicot root de-differentiation of pericycle help in -a)formation of cork cambium and vascular cambiumb)formation of lateral branchesc)both a and bd)none of the aboveCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

In dicot root, the vascular cambium is completely secondary in origin, and it originates from a portion of pericycle tissue.The pericycle gives rise to lateral roots, cork cambium and the part of the vascular cambium.

Answer

In dicot root, the vascular cambium is completely secondary in origin, and it originates from a portion of pericycle tissue. The pericycle regulates the formation of lateral roots by rapidly dividing near the xylem elements of the root. It has been known to often be confused with other parts of the plant

Answer

De-differentiation of pericycle in dicot roots is a crucial process that plays a significant role in the formation of lateral branches in plants. This process involves the reversion of differentiated pericycle cells back to a meristematic state, allowing them to divide and give rise to new tissues.

Formation of Lateral Branches:
One of the main functions of the pericycle is to give rise to lateral roots and lateral branches in dicot plants. The pericycle, which is the outermost layer of the vascular cylinder in the root, possesses the ability to de-differentiate and transform into meristematic cells. This de-differentiation is triggered by certain signals, such as the presence of auxin hormone, and is essential for the initiation of lateral branches.

When the pericycle cells de-differentiate, they regain the ability to divide and undergo cell elongation. This division and elongation result in the formation of new cells, which, over time, develop into lateral branches. These lateral branches grow outwards from the main root, increasing the plant's capacity to absorb nutrients and water from the soil.

Formation of Cork Cambium and Vascular Cambium:
The de-differentiation of pericycle cells also plays a role in the formation of cork cambium and vascular cambium. The cork cambium is responsible for the production of the outer protective layer of the root called the cork. The vascular cambium, on the other hand, produces secondary xylem and phloem, allowing for the growth and thickening of the root.

During the process of de-differentiation, some pericycle cells differentiate into cork cambium, while others differentiate into vascular cambium. These meristematic cells then actively divide and produce new tissues, which contribute to the growth and development of the root.

In summary, the de-differentiation of pericycle cells is crucial for the formation of lateral branches in dicot roots. Additionally, this process also leads to the formation of cork cambium and vascular cambium, which are responsible for the growth and thickening of the root. Therefore, the correct answer is option C - both a) formation of cork cambium and vascular cambium, and b) formation of lateral branches.

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