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.
- A.Bacteria cell wall is made up of peptidoglycan
- B.Pili and fimbriae are mainly involved in motility of bacterial cells✓
- C.Cyanobacteria lack flagellated cells
- 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."