Plant Water Relations
Biology ⇒ Plant Biology
Plant Water Relations starts at 8 and continues till grade 12.
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See sample questions for grade 11
A plant cell has a solute potential of -0.6 MPa and a pressure potential of 0.2 MPa. What is its water potential?
A plant cell is placed in distilled water. What will happen to the cell?
A plant cell with a water potential of -0.7 MPa is placed in a solution with a water potential of -0.3 MPa. In which direction will water move?
Calculate the water potential of a plant cell if its solute potential is -0.5 MPa and its pressure potential is 0.3 MPa.
Define water potential and explain its significance in plant water relations.
Describe how stomatal opening is regulated by potassium ions.
Describe the cohesion-tension theory of water transport in plants.
Describe the effect of high humidity on the rate of transpiration.
Explain the difference between diffusion and osmosis in the context of plant water relations.
Explain the role of root pressure in the ascent of sap.
Explain the term 'hydathodes' and their function in plants.
Explain why the apoplast pathway is interrupted at the endodermis.
Explain why wilting occurs in plants.
State one adaptation in xerophytes that reduces water loss.
