D2.3 Water Potential HL

What symbol is used to represent water potential?

• Ω

• α

• β

• ψ

What is the water potential of pure water at 20 degrees Celsius at sea level?

• -1

• 0

• 100

• 1

Which factor increases water potential?

• Low pressure

• High pressure

• Low solute concentration

• High solute concentration

In osmosis, water moves from areas of:

• High solute concentration to low solute concentration

• Low pressure to high pressure

• Low solute concentration to high solute concentration

• High pressure to low pressure

What happens to water potential when solutes are added to water?

• It becomes positive

• It becomes zero

• It becomes negative

• It remains unchanged

In a hypotonic solution, water will move:

• Into the plant cell

• Not at all

• Out of the plant cell

• Equally in and out of the plant cell

What effect does increasing pressure have on water potential?

• Decreases it

• Increases it

• Makes it zero

• No effect

In a hypertonic solution, water will move:

• Out of the plant cell

• Into the plant cell

• Not at all

• Equally in and out of the plant cell

What is the relationship between solute concentration and water potential?

• No relationship

• Direct

• Exponential

• Inverse

What happens to the water potential of a plant cell in a hypertonic solution?

• It becomes more negative

• It remains the same

• It becomes zero

• It becomes more positive