Question

Axoneme with 9+2 microtubular arrangement occurs in

• A. Cilia
• B. Flagella
• C. Both A and B
• D. Centriole

Answer 1

Answer: (C)

Both A and B

• Axoneme with 9+2 microtubular arrangement occurs in both cilia and flagella.
  
• 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 'Both A and B'.