MEDIUM
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If OP = TP then, the cell will be?

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Important Questions on Plant Water Relation

EASY
Water potential of pure water at standard temperature is ________
EASY
Which of the following physico-chemical techniques is commonly used to desalinate brackish water?
MEDIUM

Assertion (A): Pea seeds swell more on imbibition than wheat seeds.

Reason (R): Proteins have a high imbibing capacity.

MEDIUM
Define water potential. What is the value of water potential of pure water.
EASY
The salting of pickles is an example for
MEDIUM
Define and explain water potential
EASY
The magnitude of increment in water potential in a turgid cell is called ________
EASY
Addition of more solutes in a given solution will:
MEDIUM

Assertion (A): The flow of solvent molecules from a pure solvent to the solution through semipermeable membrane is osmosis.

Reason (R): Pure solvent molecules flow out of the solution through semipermeable membrane if a pressure larger than the osmotic pressure is applied to the solution side.

The correct answer is:

EASY
The water potential ψp of pure water at standard temperature and atmospheric pressure is:
EASY
Which one gives the most valid and recent explanation for stomatal movements?
MEDIUM
Which of the following facilitates opening of stomatal aperture?
MEDIUM
Write the relation between Diffusion Pressure Deficit (DPD), Osmotic Pressure(OP), and Turgor Pressure(TP).
MEDIUM
Calculate water potential of solution which is enclosed in a semipermeable membrane whose Osmotic Potential is –35 bar and Pressure Potential is -5 bar.
EASY

Give biological explanations for the following:

Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered

EASY

Correct the following statements by changing the underlined words:

The cell sap of root hair is Hypotonic.

EASY

The containers X and Y have 1 litre of pure water and 1 litre of 0.1 M sugar solution, respectively. Which one of the following statements would be correct regarding their water potential Ψ and osmotic potential Ψs?

*Note: There were errors in original KVPY papers, and thus the options are modified here.

EASY
The water potential of pure water is
HARD
Which of the following elements is responsible for maintaining turgor in cells?