The term not related to ‘centriole’ structure is

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Hub

Triplet

Cartwheel like organisation

Doublet

answer is D.

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Detailed Solution

Centrosome has a pair of centrioles held by an amorphous material.

Both the centrioles in a centrosome lie perpendicular to each other in which each has an organisation like the cartwheel. They are made up of nine evenly spaced peripheral fibrils of tubulin protein.

Each of the peripheral fibril is a triplet.The adjacent triplets are also linked.

The central part of the proximal region 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

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