ICSE Class 10 Biology / Absorption by Roots – The process Involved 1- Characteristics of Roots

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Roots are vital for plants by fixing them to the soil, absorbing water and minerals, conducting nutrients, and providing mechanical support. Water and minerals absorbed by roots are essential for plant functions such as photosynthesis, transpiration, and nutrient transportation, with factors like surface area, root hairs, cell sap concentration, and thin root cell walls influencing water absorption.

Insights

  • Roots are vital for plants as they anchor them in the soil, absorb water and minerals, transport nutrients, and provide structural support to plant cells.
  • Factors such as root hairs, surface area, cell sap concentration, and thin cell walls significantly impact the root's ability to absorb water efficiently, with root hairs playing a crucial role by facilitating water movement through the cell membrane.

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Recent questions

  • How do roots benefit plants?

    By fixing plants to soil, absorbing water and minerals, and providing mechanical strength.

  • What nutrients do roots absorb?

    Phosphates, sulfates, nitrates, magnesium, calcium, and chlorine.

  • What factors affect root water absorption?

    Surface area, root hairs, cell sap concentration, and thin cell walls.

  • What is the role of root hairs in water absorption?

    Creating a high salt concentration to facilitate water movement.

  • Why are roots important for plant health?

    They provide essential functions like anchoring, water absorption, and nutrient uptake.

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Summary

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Roots: Essential for Plant Growth and Function

  • Roots are crucial for plants as they help in fixing the plant to the soil, absorbing water and minerals, conducting these nutrients through xylem tissue, and providing mechanical strength to plant cells. Water is essential for various plant functions like photosynthesis, transpiration, and nutrient transportation, with roots also absorbing minerals such as phosphates, sulfates, nitrates, magnesium, calcium, and chlorine from the soil.
  • The ability of roots to absorb water depends on factors like a large surface area, root hairs, high concentration of cell sap, and thin walls of root cells. Root hairs, made up of a single cell, play a vital role in water absorption by creating a high concentration of salt in the cell, allowing water movement from the soil to the roots through the cell wall and membrane.
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