Eubacteria and Cyanobacteria Quiz
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Questions and Answers

What is the characteristic of eubacteria?

  • They lack a cell wall
  • They are motile without a flagellum
  • They have a flexible cell wall
  • They have a rigid cell wall and a flagellum if motile (correct)
  • What type of autotrophs are cyanobacteria?

  • Heterotrophic
  • Photosynthetic (correct)
  • None of these
  • Chemosynthetic
  • What is the role of chemosynthetic autotrophic bacteria in the environment?

  • They form blooms in polluted water bodies
  • They fix atmospheric nitrogen
  • They decompose organic matter
  • They oxidise various inorganic substances and recycle nutrients (correct)
  • What type of cells do some cyanobacteria use to fix atmospheric nitrogen?

    <p>Heterocysts</p> Signup and view all the answers

    Which type of bacteria are most abundant in nature?

    <p>Heterotrophic bacteria</p> Signup and view all the answers

    Study Notes

    Characteristics of Eubacteria

    • Eubacteria are characterized by their peptidoglycan cell wall and lack of membrane-bound organelles.

    Autotrophic Cyanobacteria

    • Cyanobacteria are a type of autotroph that uses light energy to produce their own food through photosynthesis.

    Role of Chemosynthetic Autotrophic Bacteria

    • Chemosynthetic autotrophic bacteria play a crucial role in the environment by converting inorganic compounds into organic compounds, supporting life in ecosystems.

    Nitrogen Fixation in Cyanobacteria

    • Some cyanobacteria use specialized cells called heterocysts to fix atmospheric nitrogen, making it available for other organisms.

    Abundance of Bacteria

    • Eubacteria are the most abundant type of bacteria found in nature.

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    Description

    Test your knowledge on eubacteria and cyanobacteria in this quiz. Learn about their characteristics, cell structure, and ecological roles. Perfect for biology enthusiasts and students.

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