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All Physics Chemistry Botany Zoology

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Which of the following is the two major components of water potential

A. Solute potential and osmotic pressure B. Solute potential and pressure potential C. Osmotic pressure and turgor pressure D. Osmotic pressure and solute concentration

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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Water molecules show a motion

A. Random B. Rapid C. Constant D. All of these

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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The greater water potential actually does not suggest the

A. Greater concentration of water B. Greater Kinetic Energy C. Less solute concentration D. Lower solute potential

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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Water moves

A. Down a gradient of solutes B. Down a gradient of free energy C. Above a gradient of water D. Above a gradient of pressure

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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Water potential is not

A. Denoted by Greek symbol psi B. Expressed in pressure units such as Pascals (Pa) C. At standard temperature not under any pressure, is taken zero D. Always negative or zero

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

Hint: If you are applying an external pressure, the water potential will be positive

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Solute Potential is the amount where

A. Dissolution of a solute causes lowering of water potential B. Increase of solute causes increase of water potential C. Increase of solute causes decrease in osmotic pressure D. Increase of solute causes increase in solute potential

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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Find the correct one.

A. All the solutes have lower water potential than pure water given that solution is under external pressure B. All the solutions have lower water potential than the pure water C. All the solutions have higher water potential than the pure water D. All the solutions have lower water potential than pure water unless solution is under such external pressure which is more than the solute potential

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

Hint: Formula of Water Potential

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For a solution at atmospheric pressure

A. Solute potential is more than water potential B. Water potential more than solute potential C. Solute potential is less than water potential D. Water potential is equal to solute potential

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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Plants have

A. Positive water potential when cells get turgor pressure B. Negative water potential when water is transported up a stem C. Negative pressure is developed in the cell dure to turgor pressure D. Both A and B

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Explanation

11.2.1 Water Potential

Page number-180

Transport in Plants

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If the cell gets water from surroundings, now a certain pressure develops inside it against the wall is called as

A. Turgor pressure B. Wall pressure C. Osmotic Pressure D. Solute pressure

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Explanation

11.2.1 Water Potential

Page number-179

Transport in Plants

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