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प्रश्न
Explain the difference between osmosis and diffusion.
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उत्तर
| Sr. No. | Diffusion | Osmosis |
| 1. | It is the movement of molecules of a substance from a region of higher concentration to a region of lower concentration. | It is the process in which water molecules move through a semi-permeable membrane from a region of higher concentration to a region of lower concentration. |
| 2. | Diffusion involves the free mixing of the solution without a semipermeable membrane. | Osmosis involves the use of a semipermeable membrane. |
| 3. | In diffusion, both solvent and solute molecules move directly into each other. Thus, it is a bilateral process. | In osmosis only solvent molecules move through the semipermeable membrane. The movement of solute particles is checked by the semipermeable membrane. |
| 4. | It is shown by solutions as well as by gases. | It is shown by solutions only. |
| 5. | It can neither be stopped nor reversed. | It can be stopped or reversed by applying external pressure on the solution having a higher concentration. |
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संबंधित प्रश्न
Differentiate between Diffusion and Osmosis (Definition)
Give two examples of turgor movements in plants.
The diagram given below represents an experimental set-up to demonstrate a certain process. Study the same and answer the questions that follow:
- Name the process.
- Define the above-named process.
- What would you observe in the experimental set-up after an hour or so?
- What control experiment can be set up for comparison?
- Keeping in mind the root hair, cell and its surroundings, name the parts that correspond to
- concentrated sugar solution
- parchment paper
- water in the beaker
- Name any other material that can be used instead of parchment paper in the above experiment.
- Mention two advantages of the process for the plants.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypotonic salt solution
Choose the correct answer:
Osmosis involves diffusion of ___________
Differentiate between:
Osmosis and Diffusion
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Cells that have lost their water content are said to be deplasmolysed.
Multiple Choice Question:
Marine fish when thrown under tap water bursts because of:
DPD of a cell can be expressed as ______
