What is mitotic apparatus? Describe its structure and its role during cell division. (UPSC 2024, 15 Marks, )

माइटोटिक उपकरण क्या है? इसके संरचना और कोशिका विभाजन के दौरान इसकी भूमिका का वर्णन करें। (What is mitotic apparatus? Describe its structure and its role during cell division.)