How do plant cells undergo mitosis without centrosomes?

Spindle formation in plants is very different from most other eukaryotes owing to the fact that plant cells lack centrosomes or spindle pole bodies, which act as the microtubule organizing centers in animal cells. read more

The evolutionary advantage that animal cells gain due to the presence of centrosomes is the ability to direct drastic changes in their shapes during mitosis. On the other hand, plant cells have a rigid cell wall that does not undergo any major changes in shape during mitosis; and the cell wall itself can organize many of the microtubules that form the spindle during mitosis. read more

Plant cells contain a special tubulin (protein) celled as “Gamma tubulin” which is used to nucleate microtubules just like centrioles in animal cells . In early prophase centrosome move towards opposite poles of the cells organising the spindle microtubules between them with the help of Gamma tubulin. read more