Define the term diffusion pressure deficit (DPD) and also write its relation.

Solution

Diffusion pressure deficit (DPD) : It is the decrease in diffusion pressure of water in a solution over its pure state.

The diffusion pressure of pure water is maximum and it continues to decrease as more and more solute is added into it.

D.P.D = O.P - T.P
Where,
D.P.D. = Diffusion pressure deficit
O.P = Osmotic pressure
T.P = Turgor pressure

Some More Questions From Transport in Plants Chapter

Who introduced the apoplast—symplast concept ?

Why transpiration is more on lower surface than on upper surface of leaves ?

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Transport In Plants

Define the term diffusion pressure deficit (DPD) and also write its relation.

Some More Questions From Transport in Plants Chapter

Who introduced the apoplast—symplast concept ?

Why transpiration is more on lower surface than on upper surface of leaves ?

Give the term for the ability to rise in thin tubes.

What is capillarity ?

Name the two forces responsible for the rise of water in a capillary tube.

Which force is first operative in translocation of water through capillarity : cohesive force or adhesive force ?

Name the driving force for water movements in plants.

What are the two factors which affect osmosis?

What is the condition of having more stomata on the lower surface called?

Name the plant having more stomata on lower surface than on upper surface.

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