Question

Cartwheel structure is shown by

• A. Flagella
• B. Cilia
• C. Centriole
• D. All of the above

Answer 1

Answer: (D)

All of the above

Centrosome is composed of two centrioles lying at right angles to each other. Each centriole has a cartwheel constitution. There is a whorl of nine peripheral triplet fibres of tubulin tilted at an angle of 40 degrees. In cilia and flagella also the cartwheel structure is present but the fibrils have 9+2 arrangement- peripheral doublet fibrils are tilted at an angle of 10 degrees.