Given below is a diagram of the cell as seen under the microscope after having been placed in a solution.
(i) What is the technical term used for the state/condition of the cell shown above?
(ii) Give the technical term for the solution in which the cell was placed.
(iii) Name the parts numbered 1 to 4.
(iv) Is the cell given above a plant cell or an animal cell? Give two reasons in support of your answer as evident from the diagram.
(v) What would you do to bring this cell back to its original condition?
Given below is a diagram of the cell as seen under the microscope after having been placed in a solution.
(i) What is the technical term used for the state/condition of the cell shown above?
(ii) Give the technical term for the solution in which the cell was placed.
(iii) Name the parts numbered 1 to 4.
(iv) Is the cell given above a plant cell or an animal cell? Give two reasons in support of your answer as evident from the diagram.
(v) What would you do to bring this cell back to its original condition?
Explanation :
(i) Technical term used for the state/condition of the cell shown above is Plasmolysis.
Plasmolysis:
- If a cell is placed in a solution that has an osmotic concentration higher than that of its cellular concentration, it will lose water by the exosmosis process.
- The protoplasm will shrink from the cell wall.
- This phenomenon of protoplasm shrinkage is called plasmolysis.
(ii) Technical term for the solution in which the cell was placed in the hypertonic solution.
- Hypertonic solution is a concentrated solution that has an osmotic concentration higher than that of another solution.
- A cell placed in a hypertonic solution will lose water (exosmosis).
(iii) Name of parts 1-4:
- Part 1: Nucleus- It is a part of a plant cell present in the cytoplasm that contains genetic materials.
- Part 2: Chloroplast- It is a plant cell organelle that is significant for photosynthesis.
- Part 3: Vacuole- It is a membrane-bound organelle that is empty of cytoplasm.
- Part 4: Hypertonic solution- As the cell is placed in hypertonic solution (higher concentrated solution), the water will move out of the cell and the protoplasm will shrink from the cell wall. The rest cellular space will be filled by the hypertonic solution.
(iv) Identification of the cell: The cell given above is a Plant cell.
- Reason 1- Chloroplast is present.
- Reason 2- The cell wall is visible clearly.
Both the chloroplast and cell wall are absent in an animal cell. So. definitely, the cell given here is a plant cell.
(v) Ways of bringing back this cell in its original condition:
- We can put this cell in a hypotonic solution
- We can put this cell in plain water which is a neutral solution.
Thus, the water will enter the cell from its surroundings and the protoplasm will get back to its original state.
Explanation :
(i) Technical term used for the state/condition of the cell shown above is Plasmolysis.
Plasmolysis:
- If a cell is placed in a solution that has an osmotic concentration higher than that of its cellular concentration, it will lose water by the exosmosis process.
- The protoplasm will shrink from the cell wall.
- This phenomenon of protoplasm shrinkage is called plasmolysis.
(ii) Technical term for the solution in which the cell was placed in the hypertonic solution.
- Hypertonic solution is a concentrated solution that has an osmotic concentration higher than that of another solution.
- A cell placed in a hypertonic solution will lose water (exosmosis).
(iii) Name of parts 1-4:
- Part 1: Nucleus- It is a part of a plant cell present in the cytoplasm that contains genetic materials.
- Part 2: Chloroplast- It is a plant cell organelle that is significant for photosynthesis.
- Part 3: Vacuole- It is a membrane-bound organelle that is empty of cytoplasm.
- Part 4: Hypertonic solution- As the cell is placed in hypertonic solution (higher concentrated solution), the water will move out of the cell and the protoplasm will shrink from the cell wall. The rest cellular space will be filled by the hypertonic solution.
(iv) Identification of the cell: The cell given above is a Plant cell.
- Reason 1- Chloroplast is present.
- Reason 2- The cell wall is visible clearly.
Both the chloroplast and cell wall are absent in an animal cell. So. definitely, the cell given here is a plant cell.
(v) Ways of bringing back this cell in its original condition:
- We can put this cell in a hypotonic solution
- We can put this cell in plain water which is a neutral solution.
Thus, the water will enter the cell from its surroundings and the protoplasm will get back to its original state.
