Transport in Plants BIOLOGY - Transport in Plants

Which of the following is a form of passive transport?

An innovative professor who wanted to give a live demonstration of a physiological process, filled a glass bottle with previously moistened mustard seeds and water. He screwcapped the bottle and kept it away in a corner and resumed his lecture. Towards the end of his lecture there was a sudden explosion with glass pieces of bottle thrown around. Which of the following phenomena did the professor want to demonstrate?

Water potential can be obtained by.

Some of the growth regulators affect stomatal opening. Closure of stomata is brought about by:

What are porins? What role do they play in diffusion?

Mention two factors on which net direction of molecules and rate of osmosis depends.

The apoplast pathway occurs inside cortex not in the endodermis? Give reason.

It is rightly said that development of root pressure requires energy. Justify.

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

What essential role does the root endodermis play during mineral absorption in plants?

Differentiate between the following: Guttation and transpiration

Explain what will happen to a plant cell if it is kept in a solution having higher water potential.

Differentiate between the following: Osmotic pressure and osmotic potential

Explain why pure water has the maximum water potential.

Discuss the factors responsible for ascent of xylem sap in plants.

Differentiate between the following: Transpiration and Evaporation

Describe the role played by protein pumps during active transport in plants.

What are the factors affecting the rate of diffusion?

What causes the opening and closing of guard cells of stomata during transpiration?