169487
Centrioles (imicrocentrosoem or cell centre) is :
1 microtubuler and membraneles
2 absent in Amoeba, red algae, blue-green algae, conifers and angiosperm and made up of a peripheral implet microtubular
3 basically locomotary and their role in spindle formation is secondary
4 all of the above
Explanation:
Exp:D Centriole is barred shaped polarized structure made up of microtubules. Present in animal cells, fungi and some algae Absent in plant cells. Composed of nine triplet microtubule \((9+0)\) arrangement. Central part is proteinaceous \& called hub. They are basically locomotory in function \& their role is spindle fibre formation is secondary.
