IB Biology HL 3.2.17 Root Pressure Question Bank
Practise IB Biology HL 3.2.17 by explaining how mineral-ion loading generates root pressure and moves water when transpiration is limited.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Explain how mineral-ion uptake into roots and xylem generates root pressure.
- Use root-pressure evidence to explain water movement when humidity limits transpiration.
B3.2.17 (HL)—Root pressure generation question 1
(a) Explain how the pressure potential and solute potential change inside a plant root cell when it is placed into a solution that is more hypotonic than the cell's cytoplasm.
The photograph shows a seedling (young plant) of the family Fabaceae. The shoot and roots have been labelled.
Explain how root pressure is generated to cause movement of water through seedlings.
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