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प्रश्न
Differentiate between the following:
Plasmolysis and Deplasmolysis.
Differentiate between Plasmolysis and Deplasmolysis.
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उत्तर
| Sr. No. | Plasmolysis | Deplasmolysis |
| 1. | In this, the protoplasm of the cell shrinks away from the cell wall. It results in the flaccid condition of the cells and the plant. | In this, the protoplasm of the cell swells up and touches the cell wall. It results in the turgid condition of the cells and the plant. |
| 2. | It is caused by exosmosis. | It is caused by endosmosis. |
| 3. | It occurs when a plant cell is placed in a hypertonic solution. | It takes place when a plasmolysed cell is kept in a hypotonic solution. |
| 4. | It results in the flaccid condition of the plant. | It results in the turgid condition of the plant. |
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संबंधित प्रश्न
A plant cell may burst when :
Give scientific reasons : Balsam plants wilt during mid-day even if the soil is well watered.
Give the equivalent term for the following:
The condition in which the cell contents are shrunken.
Give Technical Term for the following.
The pressure exerted by cell contents on a plant cell wall.
Fill in the Blank
Wilting and drooping of leaves is due to loss of ________.
When the cells of a plant are fully distended, the condition is called ______.
Give the equivalent term for the following:
Pressure exerted by the cell contents on the cell wall.
The figure given below is a diagrammatic representation of a part of the cross-section of the root in the root hair zone. Study the same and then answer the questions that follow:
- The parts labelled as 1, 2, 3 and 4 are:
- Root hair, Xylem vessel, Soil particles, Cortex respectively.
- Xylem vessel, Soil particles, Root hair, Cortex respectively.
- Root hair, Xylem vessel, Cortex, Soil particles respectively.
- Cortex, Soil particles, Xylem vessel, Root hair respectively.
- The process that enables the passage of water from soil into the root hair is:
- Diffusion
- Active transport
- Osmosis
- Passive absorption
- The kind of force which exists between a liquid and any surface is called as:
- Cohesive force
- Adhesive force
- Capillarity
- Suction force
- The kind of force between the same kind of liquid molecules is:
- Capillary force
- Transpirational pull
- Adhesive force
- Cohesive force
- Sometimes exudation of water occurs from the margin of the leaves in the early morning or night. It is termed as:
- Transpiration
- Guttation
- Bleeding
- Osmosis
Given below is the figure of a plant cell showing different kinds of pressure acting upon it. Study the figure and answer the questions that follow:
- In the figure, 1, 2 and 3 represent:
- Cytoplasm, Nucleus, Vacuole respectively
- Vacuole, Cytoplasm, Cell wall respectively.
- Cytoplasm, Cell membrane and vacuole respectively.
- Cytoplasm, Cell wall and Vacuole respectively.
- B in the figure represents:
- Osmotic pressure
- Turgor pressure
- Wall pressure
- Diffusion pressure
- A in the figure represents:
- irnbibition pressure
- Wall pressure
- Turgor pressure
- Osmotic pressure
- C in the figure represents:
- Turgor pressure
- Osmotic pressure
- Wall pressure
- Imbibition pressure
- Draw a neat and labelled diagram of a plasmolyzed plant cell.
