Bacteria Diversity and Habitats
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Questions and Answers

What is the most distinguishing characteristic used to group bacteria?

  • Habitat preference
  • Abundance
  • Cellular structure (correct)
  • Metabolic diversity

    • Which type of bacteria can synthesize their own food from inorganic substrates?

  • Photosynthetic autotrophic
  • Chemosynthetic autotrophic (correct)
  • Heterotrophic
  • Archaebacteria

    • What distinguishes Archaebacteria from other bacteria?

  • Habitat preference
  • Cell wall structure (correct)
  • Abundance
  • Metabolic diversity

    • Where do many bacteria live as parasites?

    <p>Other organisms</p> Signup and view all the answers

    In which habitat is it mentioned that very few other life forms can survive?

    <p>Deep oceans</p> Signup and view all the answers

    What is the most abundant micro-organism?

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

    What is the role of methanogens in the gut of ruminant animals?

    <p>They produce methane (biogas) from the dung of the animals</p> Signup and view all the answers

    What is a characteristic feature of cyanobacteria?

    <p>Presence of chlorophyll a similar to green plants</p> Signup and view all the answers

    What is the primary role of chemosynthetic autotrophic bacteria?

    <p>Oxidize inorganic substances and use the released energy for ATP production</p> Signup and view all the answers

    How do heterotrophic bacteria contribute to nutrient recycling in nature?

    <p>They play a significant role in decomposing organic matter</p> Signup and view all the answers

    What is a common method of reproduction for bacteria?

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

    What distinguishes eubacteria from other types of bacteria?

    <p>Presence of a rigid cell wall and, if motile, a flagellum</p> Signup and view all the answers

    What environmental condition may trigger spore production in bacteria?

    <p>Unfavorable conditions</p> Signup and view all the answers

    Which type of bacteria can fix atmospheric nitrogen in specialized cells called heterocysts?

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

    What cellular component distinguishes cyanobacteria as photosynthetic autotrophs?

    <p>'Chlorophyll a' similar to green plants</p> Signup and view all the answers

    What is the primary function of methanogens in the gut of ruminant animals?

    <p>Production of methane (biogas)</p> Signup and view all the answers

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