What are the different factors that affect the rate of diffusion?

2

(a)

What are proteins? what role do they play in diffusion?

2

(a)

Will the ascent of sap be possible without the cohesion and adhesion of water molecules?Explain.

2

(a)

Distinguish between exosmosis and endosmosis

2

(a)

State any two functions of turgor pressure

2

(a)

In a gridled plant, when water is supplied to the leaves above the girdle, leaves may remain green for some time then wit and ultimately die. What does it indicate?

2

(a)

How does the phenomenon of mass/bulk flow differ from the diffusion?

2

(a)

Plants managed to grow under limited water supply without compromising on metabolic activities. How?

2

(a)

Draw a diagram of a stomatal apparatus.

2

(a)

What is transpiration?

2

(a)

What is translocation?

2

(a)

What do you understand by osmosis?

2

(a)

Define plasmolysis.

2

(a)

What do you understand by guttation?

2

(a)

"Transport of minerals cannot take place through diffusion." Is it true or false? Give explanation for your answer.

2

(a)