Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Centrioles show a cartwheel-like organization when viewed in a transverse section. Reason (R): The central proteinaceous hub of the centriole is connected to the peripheral triplets of tubulin by radial spokes. In the light of the above statements, choose the most appropriate answer from the option

Step-by-step solution

Assertion (A) is true as centrioles possess an internal organization that resembles a cartwheel. Reason (R) is also true and correctly explains the Assertion. The cartwheel appearance is directly due to its 9+0 arrangement of microtubules, where the central proteinaceous hub is connected to the nine peripheral triplets of tubulin by radial spokes. This specific hub-and-spoke geometry creates the characteristic cartwheel pattern. Answer: Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explan