What will happen if cell sap of root hair cells contain high concentration of ions?

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

Reason $\left(\mathrm{R}\right):$ 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:

The containers $\mathrm{X}$ and $\mathrm{Y}$ have $1$ litre of pure water and $1$ litre of $0.1 \mathrm{M}$ sugar solution, respectively. Which one of the following statements would be correct regarding their water potential $\left(\mathrm{\Psi }\right)$ and osmotic potential $\left(\mathrm{\Psi }s\right)?$

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

 Differentiate between the following pairs on the basis of what is indicated in the brackets.

Hypotonic solution and Hypertonic solution [condition of a plant cell when placed in them].

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

Osmosis and Active Transport (Substances undergoing movement)

Assertion ($\mathrm{A}$): Pea seeds swell more on imbibition than wheat seeds.

Reason ($\mathrm{R}$): Proteins have a high imbibing capacity.

Correct the following statements by changing the underlined words:

Xylem transports starch from the leaves to all parts of the plant body.

Give biological explanations for the following:

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