What type of bacteria are arranged in curved lines and are pus-forming?

Streptococci are a type of bacteria characterized by their arrangement in chains or curved lines, which is distinct from other bacterial forms. They are also known for being pus-forming, which means they can lead to the development of infections that result in pus. This quality is particularly significant in clinical settings, as pus-forming bacteria often indicate an infection that may require treatment.

In contrast, staphylococci typically appear in clusters like grapes rather than in curved lines. Bacilli are rod-shaped bacteria and do not fit the description of being arranged in curves. Cocci are spherical and can be found in various arrangements, but they do not inherently form chains in the manner that streptococci do. Therefore, streptococci is the correct answer due to their unique arrangement and pus-forming capability, making them particularly relevant in discussions about bacterial infections in the context of barbering and personal grooming services.