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प्रश्न
Give Reasons for the following.
Plants begin to die when the excess of soluble fertilizers are added to the soil?
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उत्तर
Excess application of soluble fertilizers in soil makes the soil solution hypertonic than cell sap, hence exosmosis takes place and plants begin to die.
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संबंधित प्रश्न
The space between the cell wall and plasma membrane in a plasmolysed cell is filled with ______.
Define the following:
Diffusion
Define the following:
Hypertonic solution
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:
Comment on the nature (tonicity) of the liquid surrounding the cell.
Give at least three uses of water to green plants
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 pressure which is responsible for the movement of water molecules across the cortical cells of the root.
Multiple Choice Question:
Osmosis involves:
