Class 11th – Root – Regions | Morphology of Flowering Plants | Tutorials Point
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The root cap protects the root tip and secretes mucilage for movement, followed by the meristematic region for cell division and longitudinal growth, the elongation region for cell elongation, root hairs for absorption, and the maturation region for cell differentiation and metabolic activities. These regions work together to facilitate root penetration, nutrient and water absorption, and overall root growth.
Insights
- The root cap at the tip of roots protects and lubricates, aiding in soil penetration for nutrient absorption.
- The meristematic region facilitates cell division for root growth, while the elongation region elongates cells, crucial for increasing root length. Root hairs in the maturation region enhance absorption, and diverse cell types enable metabolic activities within the root.
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Recent questions
What is the function of the root cap?
Protection and aiding in soil penetration.
Where does active cell division occur in roots?
Meristematic region.
What is the role of the elongation region in roots?
Rapid cell elongation for root lengthening.
Why are root hairs important for roots?
Essential for water and mineral absorption.
What happens in the maturation region of roots?
Cells differentiate into various types with distinct functions.
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Summary
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Root Structure and Growth in Plants
- The first region of a typical root is the root cap, which is a thick protective structure at the tip of roots, providing protection and aiding in penetration into the soil for nutrient and water absorption. The root cap secretes a lubricating substance called mucilage to facilitate root movement.
- Following the root cap is the meristematic region, where active cell division occurs, leading to longitudinal growth of the roots. This region is crucial for increasing the number of cells and subsequently the length of the roots.
- Above the meristematic region lies the elongation region, where cells rapidly elongate, contributing significantly to the overall lengthening of the roots. Despite not dividing, these cells play a key role in root growth.
- Root hairs, hair-like single-cellular structures, are essential for water and mineral absorption in roots. Their presence increases the surface area for absorption, making them vital for nutrient uptake. The final region, the maturation region, sees cells differentiate into various types with distinct functions, such as cortex, endodermis, and phloem cells, enabling diverse metabolic activities within the root.
