Multiple choice Which of the following is a pair of obligate anaerobes only? Nocardia and Staphylococcus Nocardia and Treponema Treponema and Staphylococcus Propionibacterium and Treponema Propionibacterium and Nocardia Reveal answer Fill a bubble to check yourself D Correct answer Explanation Yes, it is correct. Propionibacterium and Treponema are Obligate anaerobes.