Plant Morphology Tristylous Plants Quiz
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Questions and Answers

What is the genetic basis of style length difference in distyly flowers?

  • Epigenetic modifications
  • Multiple genes with varying effects
  • Single gene 's' with two alleles, S and s (correct)
  • Environmental factors influencing gene expression

    • In the Primula plant, which flower morphology results in self-incompatibility?

  • Difference in the number of petals
  • Difference in the length of sepals
  • Difference in the length of stamens
  • Difference in the length of styles (correct)

    • Which allele is dominant in the Pin (ss) flowers in distyly?

  • Both alleles are co-dominant
  • Allele s
  • An entirely different allele not mentioned in the text
  • Allele S (correct)

    • What is the phenotype of Thrum flowers in distyly?

    <p>Long style and short stamens</p> Signup and view all the answers

    Which type of inheritance pattern is observed for style length in distyly?

    <p>Dominant-recessive</p> Signup and view all the answers

    What is the term used for two types of style lengths present in distyly flowers?

    <p>'Morphs'</p> Signup and view all the answers

    Which flower trait differences lead to self-incompatibility in Heteromorphic System of SI?

    <p>Difference in style and stamen length</p> Signup and view all the answers

    'Brevistylous' flowers are characterized by:

    <p>Short styles and long stamens</p> Signup and view all the answers

    'Thrum' flowers are associated with:

    <p>&quot;Pin&quot; flowers</p> Signup and view all the answers

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