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CAIE A-Level Biology 15.2.3 Gibberellin in Barley Germination

Practise tracing embryo gibberellin to aleurone receptors, DELLA breakdown and amylase-gene expression, then link starch hydrolysis to respiration and seedling growth.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • trace gibberellin movement from the embryo to receptors in the aleurone layer
  • link DELLA breakdown and transcription factors with expression of the amylase gene
  • explain starch hydrolysis supplying sugars for embryo respiration and growth

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