Bacteria and Phytopathogenic Bacteria Characteristics
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Questions and Answers

Which of the following is NOT a characteristic of phytopathogenic bacteria?

  • They are non-spore formers
  • They are mostly gram-negative
  • They can cause human and animal diseases (correct)
  • They include genera like Streptomyces and Corynebacterium

What is the typical size range of bacteria of medical importance?

  • 5 - 20 μm in diameter and 20 - 50 μm in length
  • 0.2 - 1.5 μm in diameter and 3 - 5 μm in length (correct)
  • 10 - 50 μm in diameter and 50 - 100 μm in length
  • 2 - 10 μm in diameter and 10 - 20 μm in length

What is the unit of measurement used in bacteriology?

  • Nanometer (nm)
  • Millimeter (mm)
  • Micrometer (μm) (correct)
  • Centimeter (cm)

Which of the following is a curved, comma-shaped rod?

<p>Vibrios (D)</p> Signup and view all the answers

Which of the following is NOT a characteristic arrangement of cocci?

<p>Filamentous (D)</p> Signup and view all the answers

Which of the following is a characteristic of spirochetes?

<p>They are flexuous spiral forms (A)</p> Signup and view all the answers

Which of the following is NOT a characteristic of phytopathogenic bacteria?

<p>Capable of photosynthesis due to the presence of chlorophyll (C)</p> Signup and view all the answers

Which statement about the growth of phytopathogenic bacteria is correct?

<p>They can be cultured on artificial media, but grow slowly compared to saprophytes (C)</p> Signup and view all the answers

Which of the following statements about the shape of phytopathogenic bacteria is NOT true?

<p>They are always perfectly spherical in shape (C)</p> Signup and view all the answers

How do phytopathogenic bacteria typically gain entry into plants?

<p>Through natural openings or wounds in the plant (B)</p> Signup and view all the answers

Which of the following statements about the flagellation of phytopathogenic bacteria is correct?

<p>The majority of phytopathogenic bacteria are flagellate (B)</p> Signup and view all the answers

What is the primary mode of carbohydrate decomposition for phytopathogenic bacteria?

<p>Aerobic or facultative anaerobic (B)</p> Signup and view all the answers

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