Question

Pattern of organisation of eukaryotic cilia and flagella is

• A. 9 + 0
• B. 9 + 1
• C. 9 + 2
• D. 9 + 3

Answer 1

The correct option is C 9 + 2

• Cilia and flagella are cellular projections which are covered by an extension of the plasma membrane.
  
• They both have similar internal structures and are made up of microtubules.
• The microtubule arrangement within cilia and flagella is 9 + 2 arrangement of microtubules.
  
• It contains nine fused pairs of microtubules on the outer side of a cylinder and the two unfused microtubules at the centre.
  
• So, the correct answer is '9 + 2'.