Abscisic Acid (ABA) in Vascular Plants
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Questions and Answers

Which form of ABA is naturally occurring and ubiquitous in vascular plants?

  • cis-ABA (correct)
  • trans-ABA
  • cis-ABA and trans-ABA
  • inactive ABA

    • What is the physiological effect of ABA?

  • Signal transduction (correct)
  • Vivipary
  • ABA:GA ratio
  • Seed dormancy

    • What is vivipary?

  • The absence of ABA in liverworts
  • The synthesis of ABA in cells containing chloroplasts and amyloplasts
  • The precocious germination of seeds in the fruit while still attached to the plant (correct)
  • The fluctuation of ABA biosynthesis and concentrations during development

    • Which mutant of maize synthesizes ABA in almost all cells that contain chloroplasts and amyloplasts?

    <p>vp14 mutant</p> Signup and view all the answers

    What controls seed dormancy in plants?

    <p>ABA:GA ratio</p> Signup and view all the answers

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