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Question
Define the following term:
Tonicity
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Solution
The relative concentration of the solutions that determines the direction and extent of diffusion is called tonicity.
RELATED QUESTIONS
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]
Differentiate between the following:
Plasmolysis and deplasmolysis
Two potato cubes each 1 cm3 in size, were placed separately in two containers (A&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 had somewhat decreased in size. Use the above information to answer the questions that follow:
Account for the firmness and increase in the size of the potato cubes placed in water.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypotonic salt solution
Distinguish between the following:
Filtration and diffusion
Name the following:
The pressure with which the molecules of a substance diffuse.
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
What is the water potential?
Give Reasons for the following.
We gargle with saline water in case of throat infection.
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.
