Which cytoplasmic structures are essential during cell division?

Statement $X$ : Basal bodies are involved in the formation of cilia and flagella.
Statement $Y$ : Nucleoli contain the nucleus and chromatin material.

$A$: The axoneme of a eukaryotic flagellum possesses a number of microtubules running parallel to the long axis.
$R$: It has a pair of peripheral doublet and a pair of centrally located microtubules.

In a eukaryotic cell,which of the following organelles does not possess a membrane?

Describe the microstructure of cilia and flagella.

The number of membranes that surround the centriole structure is: