I wanna ask how to prepare phylums from Miller and Harley? As there are many classes and many other phylums discussed in this book and they are not in the past papers, so i am confused how to prepare... like in phylum Annelida 3 classes are discussed and all organ systems of each class are discussed in detail.... Am I supposed to prepare all organ systems of the classes in detail as in the book??

And is this book enough for preparation?? As some topics are not discussed in detail in this book like conjugation, autogamy e.t.c