[amp_mcq option1=”Nitrosomonas sp” option2=”Azotobacter sp” option3=”Nitrobacter sp” option4=”Bacillus dentificans” correct=”option4″]<\/p>\n
The correct answer is: D. Bacillus dentificans<\/strong><\/p>\n Bacillus dentificans is a Gram-positive, rod-shaped bacterium that is part of the normal microbiota of the oral cavity. It is a facultative anaerobe, meaning that it can grow in the presence or absence of oxygen. Bacillus dentificans is a common cause of dental caries, or tooth decay. It produces acids that demineralize tooth enamel, leading to the formation of cavities.<\/p>\n Nitrosomonas sp., Azotobacter sp., and Nitrobacter sp. are all nitrogen-fixing bacteria. They are able to convert atmospheric nitrogen into ammonia, which is a form of nitrogen that plants can use. These bacteria are important for the fertility of soil, as they help to increase the amount of nitrogen available for plants.<\/p>\n Bacillus dentificans is a different type of bacterium that does not play a role in soil fertility. It is a common cause of dental caries, and it is not beneficial to plants.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”Nitrosomonas sp” option2=”Azotobacter sp” option3=”Nitrobacter sp” option4=”Bacillus dentificans” correct=”option4″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-45289","post","type-post","status-publish","format-standard","hentry","category-biology","no-featured-image-padding"],"yoast_head":"\n