Multiple choice Name the microorganisms which help in curdling of milk . Lacto bacilus Rhizobium Vibro choleri E .Coli Reveal answer Fill a bubble to check yourself A Correct answer Explanation Lactobacillus (also spelled Lactobacillus) are bacteria that help in curdling milk by producing lactic acid. Rhizobium fixes nitrogen in legumes, Vibrio cholerae causes cholera, and E. coli is an intestinal bacterium.