Cocci, Bacilli, Spirillum.
Three shapes of bacteria are cocci, which are spherical; bacilli, which are rod-shaped; and spirilla, which are spiral-shaped.
Baccillus [plural. bacilli], Coccus [plural. cocci], and Spirillum [plural. spirilla] are three different shapes of bacteria [singular. bacterium]. A rod-shaped bacterium is called a baccillus. A spiral shaped bacterium is called a spirillum. Spirillum only live as single cells. A round bacterium is called a coccus. Some coccus form pairs and chains while others grow in grape like bunches. Some bacilli also form pairs or chains but they do not grow in bunches. Flagellum [plural. flagella] are hair like structures that allow the bacteria to move in liquids.
The three types of bacterial shapes are cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped).
Cocci
Bacilli are rod-shaped bacteria, while cocci are spherical-shaped bacteria. Bacilli can appear singly, in pairs, or in chains, whereas cocci can appear singly, in pairs (diplococci), in clusters (staphylococci), or in chains (streptococci).
Cocci and bacilli do not cause chlamydia. Cocci cause gonorrhea.
shapes of prokaryotes
cocci bacilli spirilli
Bacilli, cocci, and spirilla all refer to the shape of different bacteria. Bacilli are rod shaped, cocci are spherical, and spirilla have "curved walls" meaning that they are either slightly bent or rigid spirals. You can use google images for pictures of each. Hope this helps!
No, bacteria with a round shape are typically referred to as cocci. Bacilli are rod-shaped bacteria.
bacilli cocci spirilli