Multiple choice

Which of the following is a purple non-sulphur bacterium?

  1. Nitrosomonas

  2. Chloroflexus

  3. Nitrobacter

  4. Rhodospirillum

  5. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rhodospirillum is a purple non-sulphur bacterium.