EASY
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A cell placed in hypotonic solution will

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Important Questions on Transport in Plants

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 salting of pickles is an example for
EASY
The water potential ψp of pure water at standard temperature and atmospheric pressure is:
HARD
Explain the process with a diagram when a living cell is placed in a concentrated solution.
EASY
A biology teacher placed a hen’s egg in three different solutions:
 Solution A: Pure water,
 Solution B: saturated salt solution,
 Solution C: Hydrochloric acid
 The sequence of treatments and the ensuring probable effect on the egg are listed below:
 I. A - B - C -Remains unchanged
 II. B - C - A - Swells
 III. C - A - B - Shrinks
 IV. B - A - C - Loses salts
 Based on the above sequence to treatment which one of the options will be correct?
EASY
Which of the following physico-chemical techniques is commonly used to desalinate brackish water?
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:

HARD
Explain the osmosis and draw a labelled diagram of demonstration of osmosis by a thistle funnel.
EASY
 A few dried raisins are put in water for some time and then placed inside the concentrated salt solution. What we observe is, raisins:
EASY
When a cell is placed in a strong salt solution. It shrinks, because:
MEDIUM

Differentiate between the following pairs on the basis of what is mentioned in the brackets:

Osmosis and Active Transport (Substances undergoing movement)

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.
HARD
Which of the following elements is responsible for maintaining turgor in cells?
MEDIUM
Write the relation between Diffusion Pressure Deficit (DPD), Osmotic Pressure(OP), and Turgor Pressure(TP).
MEDIUM

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

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

EASY
Water potential of pure water at standard temperature is ________
EASY
The water potential of pure water is
EASY
What will happen to cells of cyanobacteria if they are placed in purified water?
EASY

Give biological explanations for the following:

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