Question

find odd one out. Explain a) Rhizobium, Azotobacter, Nostoc, Clostrudium​

Answer 1

Odd one is clostridium
Coz as others are useful nitrogen fixing bacteria and clostridium is harmful bacteria.

Answer 2

Answer:

clostridium is odd one out

Explanation:

Nitrogen fixation can be done by either free-living organism or by forming a symbiotic association with plants. Free-living nitrogen fixers are Anabaena, Nostoc, Azotobacter, Clostridium, Aulosira, Bacillus species. While Rhizobium and Bacillus polymyxa forms a symbiotic association with roots to fix atmospheric nitrogen, pseudomonas is a denitrifying bacteria. Nitrococcus, Nitrobacter and Nitrosomonas are the nitrifying bacteria that convert ammonia to the usable form of nitrogen for plants.