Match the following columns and choose the correct option from the codes given below

Column I (Type of Pressure in a cell)	Column II (Characteristics)
A. Osmotic pressure	1. Provide turgidity to cells, tissues and softer organs
B. Turgor pressure	2. Control entry of water into cells
C. Wall pressure	3. Prevents bursting of cells and limits expansion
D. Diffusion pressure deficit	4. Helps in retaining water inside cells

• A - 1; B - 3; C - 2; D - 4

• A - 2; B - 4; C - 1; D - 3

• A - 3; B - 2; C - 4; D - 1

• A - 4; B - 1; C - 3; D - 2

A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The plasma membrance is selectively permeable, allowing water but not solutes to pass through. What will happen to the cell?

• The cell will swell because of endosmosis

• The cell will shrivel because of exosmosis

• The cell will shrivel because of active transport of water

• No change will occur because of hard impervious cell wall present

Read the following statements with respects to rate of transpiration.

I. In dry atmosphere, the relative humidity is low so, the rate of transpiration increases.

II. Slow breeze promotes the rate of transpiration.

III. ABA promotes transpiration.

IV. A high salt concentration in soil water increases transpiration.

Choose the incorrect options.

• I and II

• II and III

• III and IV

• I and IV

Diffusion Pressure Deficit (DPD) is equal to the Osmotic pressure substracted by

• Osmotic Pressure (OP)

• Turgor Pressure (TP)

• Suction Pressure (SP)

• Water Potential (${\mathrm{\psi }}_{\mathrm{w}}$)

The right equation for water potential is

• $\mathrm{\psi } = {\mathrm{\psi }}_{\mathrm{p}} - ( {\mathrm{\psi }}_{\mathrm{s}} + {\mathrm{\psi }}_{\mathrm{m}} )$

• $\mathrm{\psi } = {\mathrm{\psi }}_{\mathrm{p} }+ ( {\mathrm{\psi }}_{\mathrm{s}} - {\mathrm{\psi }}_{\mathrm{m}} )$

• ${\mathrm{\psi }}_{\mathrm{w}} = {\mathrm{\psi }}_{\mathrm{s}} + {\mathrm{\psi }}_{\mathrm{p}}$

• ${\mathrm{\psi }}_{\mathrm{w}} = {\mathrm{\psi }}_{\mathrm{p}} + {\mathrm{\psi }}_{\mathrm{\pi }} + {\mathrm{\psi }}_{\mathrm{m}}$

Sunken stomata are present in

• mesophyte

• xerophyte

• epiphytes

• All of these

In plants, water supply is due to

• osmosis

• imbibition

• guttation

• adhesion force

Most accepted theory for ascent of sap is

• capillarity theory

• root pressure theory

• pulsation theory

• transpiration pull theory

Transpiration differ from evaporation in

• rate of water loss

• transpiration is a physiological process whereas evaporation is physical process

• transpiration is a physical process while evaporation is physiological process

• frequency of water loss

An antitranspirant is

• cobalt chloride

• mercury

• potassium

• phenyl mercuric acetate