# Difference between bacteria and bacteroides ?

## During nodule formation Rhizobium is converted to rod shaped bacteroides why?

But bacteroides are obligate anaerobic bacteria, meaning that they die at atmospheric levels of oxygen (21% \ O_2). Some are motile while others are nonmotile, as always. But anyways you should read a text or search an article about your question because I think that this question is a little bit too advanced for us to answer...