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IB Biology HL D2.3.2 Water Movement Questions

Analyse osmosis conditions and water movement across concentration gradients in IB Biology HL D2.3.2.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Define osmolarity as the total concentration of solute particles per litre of solution.
  • Identify osmosis as the process that moves water into plant root cells.
  • Relate increased soil salinity to decreased water movement from soil into plant roots.

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Study D2.3.2—Water movement conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL D2.3.2 Water Movement Questions question 1

[Maximum number: 1]

Excessive irrigation can cause increased salinity in the soil. What effect does this have on water transport in the plant roots?

A

Decreases movement of water from soil into the root

B

Absorption of water with a higher solute concentration

C

Increases movement of water from soil into the root

D

Absorption of water with a lower solute concentration

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