Microtubules are the constituents of

Microtubules are the constituents of
A spindle fibres, centrioles and cilia.
B centrioles, spindle fibres and chromatin.
C centrosome, nucleosome and centrioles.
D cilia, flagella and peroxisomes.

Explanation

Spindle fibres, centrioles and cilia are all built of microtubules.

Detailed Solution

The axoneme of cilia has nine pairs of peripheral microtubules arranged radially and a pair of central microtubules.
Microtubules are common constituents of spindle fibres, centrioles and cilia.

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