what is centriole

• Centrosome is an organelle usually containing two cylindrical structures called centrioles.
• Both the centrioles in a centrosome lie perpendicular to each other.
• Each centriole is made up of nine evenly spaced peripheral fibrils of tubulin.
• The central part of the centriole is also proteinaceous and called the hub, which is connected with tubules of the peripheral triplets by radial spokes made of protein.
• The centrioles form the basal body of cilia or flagella, and spindle fibres that give rise to spindle apparatus during cell division in animal cells.

Centriole is an organelle, cylindrical in shape, that is composed of a protein called tubulin.
All animal cells have two centrioles. They help the cell during cell division. They work during the process of mitosis and meiosis. They could be found in some lower plants such as Chlamydomonas, although they are not present in many of the fungi, angiosperms (flowering plants) and pinophyta (conifers). They are usually present near the nucleus but are not visible when the cell is not dividing.