Absorption by Roots Welcome to your Absorption by Roots 1. Water will be absorbed by the root hairs when: None of the above Concentration of solutes in the soil is high Concentration of solutes in the cell sap is high The plant is rapidly respiring2. Osmosis involves diffusion of Suspended particles from higher to lower concentration 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 concentration3. The space between the cell wall and plasma membrane in a plasmolysed cell is filled with Hypotonic solution Water Hypertonic solution Isotonic solution4. When a plant wilts, the sequence of events is as follows: Exosmosis, deplasmolysis, plasmolysis, temporary and permanent wilting Exosmosis, plasmolysis, deplasmolysis, temporary wilting None of the above Exosmosis, plasmolysis, temporary and permanent wilting5. Osmosis involves Movement of water through cortical cells Active absorption of water through roots Cell to cell movement of water All the above6. 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. Marine fish when thrown under tap water bursts because of Exosmosis Diffusion Plasmolysis Endosmosis8. Seeds when soaked in water imbibe in it because The process of absorption works Seed coat contains lot of salts Osmotic pressure inside the seed is low There are many vacuoles in the endosperm9. When cell is fully turgid, which of the following will be zero? Osmotic pressure Suction pressure(SP) or Diffusion pressure Deficit (DPD) Turgor pressure Wall pressure10. Plasma membrane controls Passage of water and solutes in and out of the cell Movement of cell contents out of the cell Passage of water and solutes into the cell Passage of water only11 out of 10Please fill in the comment box below.
