Which of the following show (9+0) arrangements?

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Centriole and basal bodies

Cilia

Centriole

Cilia flagella

answer is A.

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Detailed Solution

Concept: The structure that aids in both the mobility and support of an organism's body is known as the cytoskeleton. Additionally, the cilia and flagella are supported during motion by a unique microtubule structure.
We need to understand the axoneme in order to answer this question. The fibrillar bundle known as the axoneme typically consists of nine pairs of microtubules organised in a ring-like pattern around the one central pair. It functions as the structure at the centre of cilia and flagella and helps creatures move. In primary cilia, there is a ring of nine microtubule doublets, and in motile cilia, there are two additional centre microtubules. As a result, the configuration for the primary cilium is 9+0, whereas the layout for the motile cilium is 9+2.
Hence, option 1 is the correct answer.

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