Which bacterial morphology includes curved rods?

The correct choice refers to vibrios, which are characterized as curved or comma-shaped rods. This distinctive morphology allows them to be differentiated from other bacterial shapes. Vibrios are particularly well-known for their role in diseases such as cholera, caused by Vibrio cholerae.

In terms of the other bacterial morphologies, cocci are spherical bacteria, bacilli are straight rods, and spirilla are more rigid spiral-shaped bacteria. These differences in shape are essential for microbiologists, as they help in the identification and classification of bacteria based on their morphology, as well as in understanding their ecological roles and potential pathogenicity.