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C3.1.22 (HL)—Auxin and cytokinin interactions

Auxin and cytokinin interactions links named stimuli, coordinating structures and effectors so body systems or plant tissues produce an integrated biological response.

Syllabus
First assessment 2025
Objective
C3.1.22
Level
HL

Concept essentials

  • Auxin and cytokinin interactions depends on linking the stimulus to the coordinating structure or signal.
  • The pathway for auxin and cytokinin interactions must keep information flow and response direction clear.
  • Named tissues, hormones, neurons or effectors give auxin and cytokinin interactions its biological specificity.
  • Evidence about auxin and cytokinin interactions is strongest when structure, mechanism and outcome are connected.
ConceptIB Biology HL