Questions and Answers
What role do root hairs play in plants?
Why does water move from the soil into the root hairs?
What is the relationship between solute concentration and water potential in root hairs compared to soil water?
Which statement best describes the function of the red arrow in the diagram?
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What would happen if the water potential of the cell sap matched that of the soil water?
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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.
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Description
This quiz focuses on the uptake of water and mineral salts by root hairs in plants. Understand the processes involved in osmosis and the role of water potential in plant nutrition. Test your knowledge about how plants absorb essential nutrients from the soil.