Advertisements
Advertisements
Question
Define the term:
Plasmolysis
Advertisements
Solution
RELATED QUESTIONS
Explain how soaked seeds swell up and burst their seed coats.
Leaves of the sensitive plant wilt and droop down on a slight touch. What mechanism brings about this change?
The diagram given below represents an experimental set-up to demonstrate a certain process. Study the same and answer the questions that follow:
- Name the process.
- Define the above-named process.
- What would you observe in the experimental set-up after an hour or so?
- What control experiment can be set up for comparison?
- Keeping in mind the root hair, cell and its surroundings, name the parts that correspond to
- concentrated sugar solution
- parchment paper
- water in the beaker
- Name any other material that can be used instead of parchment paper in the above experiment.
- Mention two advantages of the process for the plants.
Show by a series of diagrams, the change which a plant cell will undergo when placed in
Hypertonic salt solution
Name the following:
The pressure with which the molecules of a substance diffuse.
Explain why:
Bacteria and fungi do not grow in pickles, jams, jellies and squashes.
A leaf cell of a water plant was placed in a liquid other than pond water. After sometime, it assumed a shape as shown below:

Redraw in the space provided, the diagram of the cell if it is soon placed in ordinary water for some time.
What is the water potential?
Give Reasons for the following.
On sprinkling common salt on grass growing in a lawn, the grass is killed.
Give Technical Term for the following.
A solution whose concentration is equal to the cell sap.
Give Technical Term for the following.
The condition in which the water from a cell is completely removed due to exosmosis and no more shrinkage is possible.
Name the following:
The process by which raisins swell up when placed in a beaker of water.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
During exosmosis, water moves from inside the cell to the outside of the cell.
Fill in the Blank
Raisin swells up when kept in a __________ solution.
Explain the term:
Diffusion
Explain the Term: Endosmosis
Define the following term:
Osmotic Pressure
