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IB Biology HL 3.4.2 Xerophyte and Desert Adaptations Question Bank

Practise IB Biology HL 3.4.2 by comparing plant and animal adaptations that conserve water and maintain osmotic balance in dry or saline habitats.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify xerophyte leaf, root and stomatal adaptations that reduce water loss.
  • Relate desert-animal behaviour and excretion to osmolarity and water conservation.

B4.1.2—Adaptations to abiotic environment question 1

[Maximum number: 2]

The diagram shows a nephron from a mammal.

Figure for Question B4.1.2—Adaptations to abiotic environment question 1 — IB Biology HL

Outline two adaptations for water conservation in leaves of desert plants.

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