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Questions and Answers
Which of the following best describes osmotic pressure?
Which of the following best describes osmotic pressure?
- The pressure that causes the passage of gases through semi-permeable membranes
- The pressure that causes the passage of solutes through semi-permeable membranes
- The pressure that causes the passage of ions through semi-permeable membranes
- The pressure that causes the passage of water through semi-permeable membranes (correct)
What is the relationship between solute concentration and osmotic pressure?
What is the relationship between solute concentration and osmotic pressure?
- Inverse relationship
- No relationship
- Exponential relationship
- Direct proportional relationship (correct)
What is the main factor that determines osmotic pressure?
What is the main factor that determines osmotic pressure?
- The size of the solute particles
- The volume of the solution
- The concentration of solutes in the solution (correct)
- The temperature of the solution
Which substance is responsible for the ability of tissue papers to absorb water through the imbibition phenomenon?
Which substance is responsible for the ability of tissue papers to absorb water through the imbibition phenomenon?
What is the phenomenon through which plant cell walls absorb water?
What is the phenomenon through which plant cell walls absorb water?
Which of the following substances are examples of hydrophilic colloidal substances in plants?
Which of the following substances are examples of hydrophilic colloidal substances in plants?
What happens to plant cell walls when they absorb water through imbibition?
What happens to plant cell walls when they absorb water through imbibition?
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Study Notes
Osmotic Pressure
- Osmotic pressure is the pressure that develops in a solution when it is separated from a pure solvent by a semipermeable membrane.
- Osmotic pressure increases with an increase in solute concentration.
Imbibition
- Imbibition is the phenomenon through which plant cell walls absorb water.
- Cellulose in tissue papers is responsible for the ability of tissue papers to absorb water through imbibition.
- When plant cell walls absorb water through imbibition, they swell.
Hydrophilic Colloidal Substances
- Examples of hydrophilic colloidal substances in plants include pectin, gums, and mucilages.
Key Factors
- The main factor that determines osmotic pressure is solute concentration.
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