What is the number of radial spokes in the structure of cilia and flagella?

Which of the following is a membrane-less organelle found only in animal cells?

Centrosome is an organelle containing two cylindrical structures called

Statement $A$: Plant cells lack centrioles.
Statement $R$: Plant cells form a bipolar spindle during cell division.

The cytoplasm surrounding the centrosome is known as:

Assertion : Centrosomes and centrioles are related to each other.
Reason : Centrosome usually contains two cylindrical structures called centrioles.