Prokaryotic Cell Structure · NCERT Biology

Which surface structures of bacteria do not play a role in motility but help in attachment to rocks or host tissues?

  1. Flagella and Pili
  2. Pili and Fimbriae
  3. Flagella and Fimbriae
  4. Flagella only
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Correct answer: Pili and Fimbriae

Pili and fimbriae are surface structures that do not contribute to motility. Fimbriae are small bristle-like fibers used for attachment, while pili are elongated tubular structures used for conjugation.

Difficulty: Medium Question 7 of 20

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