Centrioles are cylindrical structures composed of microtubules, typically found in animal cells and some lower plant cells, such as algae. They play a crucial role in cell division by organizing the mitotic spindle, which helps separate chromosomes during mitosis and meiOSis. Additionally, centrioles are involved in the formation of cilia and flagella, aiding in cell movement and signaling. Plant cells generally do not have centrioles, relying instead on other structures for similar functions during cell division.
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