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प्रश्न
Give appropriate biological or technical terms for the following :
Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.
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उत्तर
Diffusion
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संबंधित प्रश्न
Differentiate between the following:
Plasmolysis and deplasmolysis
(a) Mention whether the following statement is true (True) or false (False)
(b) Correct the false statement by altering the last word only.
A plant cell placed in hypotonic solution gets Plasmolysed.
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.
What do you mean by transpiration pull ?
Define the cohesive force.
What is the significance of diffusion?
Give Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
Name the following:
The pressure through which water can rise upto some feet.
Name the following:
The process by which raisins swell up when placed in a beaker of water.
During a practical exam, a plant cell in a particular solution was placed under a compound microscope. Students were told to observe the cell and name the tonicity of the solution and mention the process that occurred in the cell.
