Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What role do root hairs play in plants?
What role do root hairs play in plants?
- Structural support
- Production of chlorophyll
- Absorption of water and minerals (correct)
- Photosynthesis
Why does water move from the soil into the root hairs?
Why does water move from the soil into the root hairs?
- Root hairs excrete excess water.
- The water potential in the soil is lower than in the roots.
- Water potential in the soil is higher than in the root hairs. (correct)
- The cell sap in the root hairs has a higher concentration of solutes.
What is the relationship between solute concentration and water potential in root hairs compared to soil water?
What is the relationship between solute concentration and water potential in root hairs compared to soil water?
- Root hairs have no solutes.
- Soil water has higher solute concentration.
- Both have equal solute concentrations.
- Root hairs have higher solute concentration. (correct)
Which statement best describes the function of the red arrow in the diagram?
Which statement best describes the function of the red arrow in the diagram?
Signup and view all the answers
What would happen if the water potential of the cell sap matched that of the soil water?
What would happen if the water potential of the cell sap matched that of the soil water?
Signup and view all the answers
Flashcards are hidden until you start studying
Study Notes
Uptake of Water and Mineral Salts by Roots
- Root hairs increase the surface area for absorption of water and mineral salts into the plant.
- Soil water typically has lower concentrations of dissolved substances (solutes) compared to the cell sap in root hairs.
- Higher water potential in the soil drives the movement of water into the root hairs.
- Water flows from areas of higher water potential (soil) to lower water potential (cell sap), facilitating absorption.
- The process relies on osmotic pressure, where water moves to balance solute concentrations inside the root cells.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
