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प्रश्न
Distinguish between the following:
Turgor pressure and osmotic pressure
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उत्तर
| Turgor pressure | osmotic pressure |
| In a turgid cell , the pressure of the cell contents on the cell wall is called turgor pressure . | The pressure by which the water molecules tend to cross the semi-permeable membrance is called the osmotic pressure . |
APPEARS IN
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 highest water potential (capacity to move out higher concentrated solution) is that of ______.
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
Choose the correct answer:
Cell turgidity is caused by _______________
Choose the correct answer:
If a marine plant is transferred to fresh water, it bursts due to ___________
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:
Name and define the physical process being investigated in this experiment.
The diagram below represents an experimental set up to demonstrate a vital process. Study the same and then answer the questions that follow:
(i) Name the process.
(ii) Define the above named process.
(iii) What would you observe in the experimental setup after an hour or so?
(iv) What control experiment can be set up for the above experiment?
(v) Keeping in mind the root hair cell and its surrounding name the part that corresponds to (1) Concentrated sugar solution, (2) Parchment paper, (3) Water in the beaker.
(vi) Name any other substance that can be used instead of parchment paper in the above experiment.
(vii) Mention two advantages of this process to the plant.
Name the following:
Condition of cell in which the cell content are shrunken.
Fill in the Blank
Raisin swells up when kept in a __________ solution.
The given statement is incorrect. Rewrite the correct statement:
Fresh water fish when placed in hypertonic salt solution absorb water and burst.
