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Question
Distinguish between the following:
Hypotonic and Hypertonic solutions
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Solution
| Hypotonic solutions | Hypertonic solutions | |
| (i) | In this condition, the solution outside the cell has a lower solute concentration than the cell sap. | In this condition, the solution outside the cell has a higher solute concentration than the cells sap. |
| (ii) | The water molecules from outside will move into the cell (endosmosis). | The water molecules from the interior of the cell will move out (exosmosis) under excessive root pressure. |
| (iii) | It is a weak solution and strong solvent. | It is a strong solution with a weak solvent. |
RELATED QUESTIONS
Name the following:
The condition of a cell placed in a hypotonic solution.
Complete the following statements:
Hypotonic solution is one in which the solution kept outside the cell has lower solute concentration than ……………… the cell.
(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.
Mention whether the following statement is true or false. Correct the false statement by altering the last word only.
The shrinkage of protoplasm, when a cell is kept in hypotonic solution.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Define the following:
Osmosis
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Choose the correct answer:
Grapes when placed in a strong sugar solution shrink because of __________
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 Reasons for the following.
It is necessary to maintain a normal osmotic concentration of the blood.
Give Reasons for the following.
Drops of water on a leaf of plant like peepal does not enter the leaf by osmosis?
Differentiate between:
Osmosis and Diffusion
The beaker is divided into two chambers A and B. The big circle represents solute and the small circles solvent.
(i) What can you say about the size of the holes in the membrane, if it is to behave semi- permeably between these two?
(ii) Will the solvent molecules pass through the membrane from left to right, from right to left, in either direction or in both directions?
(iii) In which direction will there be a net movement of solvent molecules?
Fill in the Blank
When there is no movement of water in the cell from the outside medium, the medium is considered to be ______ to cell sap.
Multiple Choice Question:
When a plant wilts, the sequence of events will be as follows:
Explain the Term:
Osmosis
DPD of a cell can be expressed as ______
The given statement is incorrect. Rewrite the correct statement:
Fresh water fish when placed in hypertonic salt solution absorb water and burst.
