Which cell organelle is crucial for the division process in animal cells?

The centrioles are essential for the division process in animal cells, particularly during mitosis. They are involved in the formation of the mitotic spindle, which is the structure responsible for separating chromosomes during cell division. Centrioles help organize the microtubules that pull apart the duplicated chromosomes, ensuring each new daughter cell receives the correct number of chromosomes.

In contrast, the nucleus is vital for storing genetic material and coordinating cell activities, but it is not directly involved in the physical separation of chromosomes. Mitochondria play a critical role in energy production, while ribosomes are responsible for protein synthesis. Although these organelles perform essential functions within the cell, they do not participate in the actual division process. Therefore, the unique role of centrioles in organizing and facilitating the separation of chromosomes during cell division makes them crucial for this process in animal cells.