Advertisements
Advertisements
Question
Differentiate between the following:
Plasmolysis and deplasmolysis
Advertisements
Solution
| Plasmolysis | Deplasmolysis | ||
| 1 | It refers to the shrinkage of the cytoplasm and withdrawal of the plasma membrane from the cell wall caused due to the withdrawal of water when placed in a hypertonic solution. | 1 | Deplasmolysis is the recovery of a plasmolysed cell when it is placed in water, wherein the cell's protoplasm again swells up due to the re-entry of water. |
| 2 | In Plasmolysis, the cell becomes flaccid. | 2 | In deplasmolysis, the cell becomes turgid. |
RELATED QUESTIONS
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?
Differentiate between the following pairs on the basis of what is indicated in the brackets.
Hypotonic solution and Hypertonic solution [condition of a plant cell when placed in them]
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
Distinguish between the following:
Plasmolysis and deplasmolysis
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.
Mention whether the following statement is true (T) or false (F) and give explanation in support of your answer.
Plasmolysis is reverse of deplasmolysis.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
During exosmosis, water moves from inside the cell to the outside of the cell.
Fill in the Blanks
Osmosis in the diffusion of _______ molecules from the region of higher _____ potential to that of lower potential across a S.P.M.
DPD of a cell can be expressed as ______
