Multiple choice

Which of the following are archaebacteria?

  1. Pseudomonads

  2. Chlamydias

  3. Green sulfur bacteria

  4. Methanogens
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Methanogenesis or biomethanation is the formation of methane by microbes known as methanogens. Organisms capable of producing methane have been identified only from the domain Archaea, a group phylogenetically distinct from both eukaryotes and bacteria, although many live in close association with anaerobic bacteria.

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