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NEET 2018 · BiologyProkaryotePrevious Year Question

Select the wrong statement

Answer: (B) Pili and fimbriae are mainly involved in motility of bacterial cells. Answer: (B) Pili and fimbriae are mainly involved in motility of bacterial cells Solution: This is the wrong statement.

  1. A.Bacteria cell wall is made up of peptidoglycan
  2. B.Pili and fimbriae are mainly involved in motility of bacterial cells✓
  3. C.Cyanobacteria lack flagellated cells
  4. D.Mycoplasma is a wall – less microorganism

Correct Answer

(B) Pili and fimbriae are mainly involved in motility of bacterial cells

Solution & Explanation

Answer: (B) Pili and fimbriae are mainly involved in motility of bacterial cells Solution: This is the wrong statement. NCERT explicitly states that besides flagella, pili and fimbriae are surface structures of bacteria but do not play a role in motility; motility is due to flagella. The other statements are correct: bacterial cell wall is peptidoglycan-based, cyanobacteria lack flagellated cells, and Mycoplasma is the wall-less prokaryote. NCERT Reference: Ch 8, p.91, lines 13-14: "Pili and Fimbriae are also surface structures of the bacteria but do not play a role in motility."

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