A) Nitrosomonas
B) Chlamydomonas
C) Actinomycetes
D) Pseudomonas
Correct Answer: D
Solution :
Pseudomonads have very simple nutritional requirements and grow chemoorganotrophically at neutral pH and at temperature in the mesophillic range. One of the striking properties of many species of pseudomonads is the wide variety of organic compound used as carbon and energy source. Chlamydomonas is a unicellular green algae.It causes red colour of snow. Nitrosomonas and Nitrobacter are major nitrifying bacteria. Nitrosomonas converts the ammonium to nitrite ion during nitrification. Actinomycetcs is a large Group filamentous Gram positive bacteria that form branching filaments (a network of filaments is called my celium).
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