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The four basic shapes of bacteria are

ABacillus, coccus, vibrio and spirillum
BCocci, fungi, virus and protozoa
CCoccus, mycoplasma, virus and prion
DBacillus, virus, mycoplasma and rickettsia
Answer & Solution
Correct answer: A. Bacillus, coccus, vibrio and spirillum
Section 8.4 your syllabus: bacillus (rod-like), coccus (spherical), vibrio (comma-shaped), spirillum (spiral). Mycoplasma and viruses are taxonomically separate categories, not bacterial shapes.
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