Absorption by Roots Welcome to your Absorption by Roots 1. Seeds when soaked in water imbibe in it because Seed coat contains lot of salts The process of absorption works Osmotic pressure inside the seed is low There are many vacuoles in the endosperm2. When a plant wilts, the sequence of events is as follows: Exosmosis, plasmolysis, temporary and permanent wilting Exosmosis, deplasmolysis, plasmolysis, temporary and permanent wilting Exosmosis, plasmolysis, deplasmolysis, temporary wilting None of the above3. Water will be absorbed by the root hairs when: Concentration of solutes in the cell sap is high The plant is rapidly respiring Concentration of solutes in the soil is high None of the above4. Plasma membrane controls Passage of water and solutes into the cell Passage of water and solutes in and out of the cell Movement of cell contents out of the cell Passage of water only5. Osmosis involves Active absorption of water through roots Movement of water through cortical cells All the above Cell to cell movement of water6. In the process of Osmosis in a cell: The entire protoplast acts as a membrane Both protoplasm and cell wall act as a membrane Only cell wall acts as a membrane Only outermost layer of protoplast acts as a membrane7. When cell is fully turgid, which of the following will be zero? Turgor pressure Wall pressure Suction pressure(SP) or Diffusion pressure Deficit (DPD) Osmotic pressure8. Marine fish when thrown under tap water bursts because of Endosmosis Exosmosis Diffusion Plasmolysis9. The space between the cell wall and plasma membrane in a plasmolysed cell is filled with Hypotonic solution Water Hypertonic solution Isotonic solution10. Osmosis involves diffusion of Molecules or ions from the more concentrated solution to the less concentrated solution Solvent particles from the less concentrated solution to the more concentrated solution Suspended particles from lower to higher concentration Suspended particles from higher to lower concentration11 out of 10Please fill in the comment box below.
