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प्रश्न
Choose the correct answer:
Osmosis involves diffusion of ___________
विकल्प
suspended particles from lower concentration to higher concentration.
suspended particles from higher concentration to lower concentration.
Molecules or ions from the more concentrated solution to the less concentrated solution.
water from the less concentrated solution to the more concentrated solution.
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उत्तर
Molecules or ions from the more concentrated solution to the less concentrated solution.
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संबंधित प्रश्न
A candidate in order to study the process of osmosis has taken 3 potato cubes and put them in 3 different beakers containing 3 different solutions. After 24 hours, in the first beaker the potato cube increased in size, in the second beaker the potato cube decreased in size and in the third beaker there was no change in the size of the potato cube. The following diagram shows the result of the same experiment:
(i) Give the technical terms of the solutions used in beakers, 1, 2 and 3.
(ii) In beaker 3, the size of the potato cube remains the same. Explain the reason in brief.
(iii) Write the specific feature of the cell sap of root hairs which helps in absorption of water.
(iv) What is osmosis?
(v) How does a cell wall and a cell membrane differ in their permeability?
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.
Differentiate between the following:
Plasmolysis and deplasmolysis
Give two examples of turgor movements in plants.
Define the term:
Plasmolysis
Name the following:
The pressure with which the molecules of a substance diffuse.
Name the following:
The inward movement of solvent molecules through the plasma membrane of the cell.
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A and B), the container A having water and the other (B) containing concentrated sugar solution. After 24 hours when the cubes were examined, those placed in water were found to be firm and had increased slightly in size and those placed in concentrated sugar solution were found to be soft and somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the softness and decrease in size of the potato cubes which were placed in sugar solution.
Give Technical Term for the following.
A solution whose concentration is greater than that of the cell sap.
