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CAIE A-Level Biology 7.2.5 Xerophytic Adaptations

Practise pairing waxy cuticles, reduced leaves, rolled surfaces, hairs and sunken stomata with reduced permeability, exposed area, diffusion or trapped humid air.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • link thick waxy cuticle with lower permeability and a longer diffusion pathway
  • link rolled leaves, hairs or sunken stomata with trapped humid still air
  • link needle-shaped or reduced leaves with a smaller exposed surface area for water loss

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