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प्रश्न
Explain how soaked seeds swell up and burst their seed coats.
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उत्तर
When soaked in water, the seeds swell up due to imbibition and endosmosis. During these two processes water enters the cell. Due to endosmosis, at some point, the seed coat is unable to bear the turgor pressure and hence, the seed coat bursts.
संबंधित प्रश्न
A plant cell placed in a certain solution got plasmolysed. What was the kind of solution?
Movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration without the involvement a separating membrane, is called
Give the equivalent terms for the following:
Pressure of the cell contents on the cell wall
Give Reasons for the following.
On sprinkling common salt on grass growing in a lawn, the grass is killed.
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
Given below is the figure of an experimental set up to demonstrate root pressure.
(i) Define root pressure.
(ii) What change would you observe in the water level after some time?
(iii) What role is being played by the root pressure in the given experiment?
(iv) Why the oil has been sprinkled on water?
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.
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.
Multiple Choice Question:
In the process of osmosis in a cell:
Explain the term:
Diffusion
