Final answer:
Microtubules in centrioles, cilia, and flagella are stable rather than labile.
Step-by-step explanation:
Microtubules in centrioles, cilia, and flagella are stable rather than labile. They serve as the structural elements of these organelles and provide support and movement. In flagella and cilia, microtubules are organized in a 9+2 arrangement, with nine outer doublets and two central microtubules, allowing for wave-like motions and motion along microtubules. Centrioles, on the other hand, are the microtubule-organizing center in animal cells.