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Biology / Plant Physiology - Absorption by Roots

Biology / Plant Physiology - Absorption by Roots

  • Transportation in Plants: Transportation of water and food take place by xylem(water) and phloem(food) through diffusion and osmosis.
  • Absorption by roots : Roots play an important role in absorption of water and minerals from the soil, which is conducted to all parts of the plant body through xylem.
  • Learn about the processes and their significance involved in absorption and conduction of water like
          1) imbibition,
          2) diffusion,
          3) osmosis,
          4) plasmolysis and
          5) turgidity.
  • Transpiration: Loss of water, in the form of water vapour is called transpiration.
         --Learn different experiments showing transpiration in plants.
         --Transpiration can be measured by weighing methods and Ganong's photometer. The types of transpiration are : Stomatal (through leaves) , lenticular (through roots) and cuticular (through cuticle).
  • Photosynthesis: This module focuses on mechanism of photosynthesis.
    Processes of photosynthesis-;
          1)Light reaction: It takes place only in presence of light and occurs in grana region of plastids.
          2)Dark reaction - It is independent of light and occurs in stroma region of plastids. Also learn about the factors affecting photosynthesis.
Exercises
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Exercises
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  • Absorption by roots and Ascent of sap - SmartTest

    A SmartTest on Absorption by roots and Ascent of sap

    • Accessed by: 236 Students
    • Average Time: 00:03:58
    • Average Score: 50.73
    • Questions: 21
    • Absorption by roots and ascent of sap
    • Need of water and minerals for plants
    • Characteristics of roots for absorbing water and minerals
    • Absorption and conduction of water and minerals - Osmosis , Diffusion
    • Root pressure
    • Upward movement of water and minerals
    • Some experiments on absorption and conduction of water in plants
    • Forces contributing to ascent of sap
    • Introduction to Absorption by roots
    • Review of Absorption by roots

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