This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vibrio, Subject name: Microbiology
Darting motility which occur in V.cholerae, also found in: (PGI Dec 2008) 
Select and explain. 
A. Shigella, B. Campylobacter jejuni, C. Pneumococcus, D. Bacillus anthrax
B: Campylobacter jejuni
Answer: B: Campylobacter jejuni 
Explanation: Ans : B (Campylobacter jejuni) Campylobacter Jejuni"Direct microscopic examination-phase contrast or dark field microscopy to detect the darting or tumbling motility of the spiral rods"- Ananthanarayan 7th/407Shigella (A7th/285)They are non motile , nonsporing & non capsulatedPneumococcus (A7th/216)They are nonmotile" & nonsporingBacillus (A7th/241, 15)They are generally motile with peritrichous flagella (stately motility)", the anthrax bacillus being a notable exception.Aeromonas (A 7th/317)Aeromonas are polar flagellated organismTypes of MotilityTumbling - Listeria at 20-25degCStately - Clostridia Q, BacillusQCork screirV - T. pallidum QLashing - Borrelia QGliding - Mycoplasma QSwarming - Proteus mirabilisQ, P. vulgaris, Cl. tetani Q, Bacillus cereusDarting - V. Cholerae , Campylobacter