Absorption by Roots Welcome to your Absorption by Roots 1. In the process of Osmosis in a cell: Both protoplasm and cell wall act as a membrane Only cell wall acts as a membrane Only outermost layer of protoplast acts as a membrane The entire protoplast acts as a membrane2. Osmosis involves diffusion of Molecules or ions from the more concentrated solution to the less concentrated solution Suspended particles from higher to lower concentration Suspended particles from lower to higher concentration Solvent particles from the less concentrated solution to the more concentrated solution3. Marine fish when thrown under tap water bursts because of Diffusion Exosmosis Endosmosis Plasmolysis4. Water will be absorbed by the root hairs when: The plant is rapidly respiring None of the above Concentration of solutes in the soil is high Concentration of solutes in the cell sap is high5. Seeds when soaked in water imbibe in it because There are many vacuoles in the endosperm The process of absorption works Osmotic pressure inside the seed is low Seed coat contains lot of salts6. When a plant wilts, the sequence of events is as follows: None of the above Exosmosis, deplasmolysis, plasmolysis, temporary and permanent wilting Exosmosis, plasmolysis, temporary and permanent wilting Exosmosis, plasmolysis, deplasmolysis, temporary wilting7. 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 only8. When cell is fully turgid, which of the following will be zero? Osmotic pressure Turgor pressure Wall pressure Suction pressure(SP) or Diffusion pressure Deficit (DPD)9. Osmosis involves Cell to cell movement of water All the above Active absorption of water through roots Movement of water through cortical cells10. The space between the cell wall and plasma membrane in a plasmolysed cell is filled with Hypertonic solution Water Hypotonic solution Isotonic solution11 out of 10Please fill in the comment box below.
