Centrioles are not found in higher plant cells.
Centrioles come in pairs.
Centrioles are composed of short microtubules arranged in a cylinder. The two centrioles are aligned at right angles to each other. During cell division one centriole moves to opposite sides of the cell and may function in cell division. The basic structure of the centriole is nine groups of three microtubules arranged as a cylinder. The two illustrations below show this structure.