Plant Water Relations Quiz

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Questions and Answers

What is the purpose of understanding plant water relations?

To understand the water requirements of different plants (correct)
To study the water potential of pure water
To study the dissolution of substances in plants
To measure the kinetic energy of water molecules

What is the relationship between the concentration of water in a system and its water potential?

The greater the concentration of water, the higher the water potential (correct)
The concentration of water has no effect on water potential
Water potential is independent of the concentration of water
The greater the concentration of water, the lower the water potential

What happens when a solute is added to pure water?

The water potential becomes zero
The water potential decreases (correct)
The water potential increases
The water potential remains the same

What is the value of water potential of pure water at standard temperature?

Zero (C) Signup and view all the answers

What happens when water enters a plant cell by diffusion and exerts a pressure on the walls of the cell?

The cell becomes turgid (A) Signup and view all the answers

What is the relationship between water potential, solute potential, and pressure potential?

Water potential is equal to the sum of solute potential and pressure potential (D) Signup and view all the answers

What is osmosis?

The movement of water across a semi-permeable membrane from a region of higher concentration to a region of lower concentration (D) Signup and view all the answers

What is endosmosis?

The inward diffusion of water through a semipermeable membrane when the surrounding solution is less concentrated (A) Signup and view all the answers

What is exosmosis?

The outward diffusion of water through a semipermeable membrane when the surrounding solution is more concentrated (D) Signup and view all the answers