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Transport in Plants

Short Answer Type

81. What is the relation between water potential , solute potential and Pressure potential

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Long Answer Type

82. Does transpiration bring any useful function in plant ?

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Short Answer Type

83. Give the water potential for the following :
a. Pure water
b. Fully turgid cells
c. Concentrated solution

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84. Write short notes on :

Plasmolysis

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85. In which direction water flows regarding water potential.

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86. Describe the role of osmotic potential in regulating water potential of plant cells.

Osmostic potential is called solute potential. Both are numerically equal. If the solute concentration is increased in the cell, then i.e. osmotic potential is lowered and thus water potential is also lowered. Because of this the water enters from outside into the cell. Thus, decrease or increase in osmotic pressure determines water potential and regulates it.

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