Answer the following question given this paragraph: Centrioles are rod-like structures made of short microtubules. Nine groups of three microtubules make up each centriole. Two perpendicular centrioles make up the centrosome . Centrioles are very important in cellular division, where they arrange the mitotic spindles that pull the chromosome apart during mitosis. Q: What are the rod-like structures made of short microtubules that play an important part in cellular division? Choices: - cilia - mitochondria - fibrils - centrioles A:
A:
centrioles