Question

An organelle with an internal cross-section showing characteristic ${}^{\prime }9+2^{\prime }$ array is

• A. Microtubule
• B. Microfilament
• C. Cilium or flagellum
• D. Cytoskeleton

Answer 1

Answer: (C)

Cilium or flagellum

The axoneme of cilium or flagellum usually has nine pairs of doublets of radially arranged peripheral microtubules, and a pair of centrally located microtubules. Such an arrangement of axonemal microtubule is referred to as $9+2$ array.

So, the correct answer is 'Cilium or flagellum'.