Question

Which of the following statements is incorrect or centrioles ?

• A. Both the centrioles in a centrosome lie perpendicular to each other.
• B. Central proteinaceous hub is missing in a centriode
• C. Each centriode has an organisation like that of a cartwheel.
• D. Centrosome usually contains 2 cylindrical centrioles.

Answer 1

The correct option is B Central proteinaceous hub is missing in a centriode

Centrosome is an organelle usually containing 2 cylindrical structures called centrioles. Both the centrioles in a centrosome lie perpendicular to each other in which each centriole has an organisation like that of a cartwheel. They are made up of 9 evenly spaced peripheral fibrils of tubulin protein . The central part of the proximal region of the centriole is proteinaceous hub which is connected with peripheral triplets by radial spokes .

So, the correct option is 'Option B' .