What are the main areas of study in Zoology?

Morphology, which refers to aspects of anatomy that carry functional meaning.
Functional anatomy or physiology, which studies organic processes and phenomena of the organism or any of its parts, or a particular bodily process.
Classification, which is the arrangement of organisms.
Taxonomy, which is the division of living beings, ordered and hierarchical.
Systematics, which studies the relationship of kinship and the reconstruction of Phylogeny.
Phylogeny, which studies the origin and development of a taxon or the evolutionary history of its development.
Ontogeny, which is the development of an individual from the egg to senescence.
Zoological systematics, which is a special morphology that attempts to explain the evolutionary relationships of different animals, as well as the origin and causes of their diversification.
Speciation, which is the evolutionary process or event by which a new species arises.
Adaptation, which is an anatomical structure, physiological process, or behavioral trait that evolved by natural selection, improves an organism's ability to survive and reproduce, and is transmitted to offspring.
Nomenclature, which is the system of scientific names applied to taxonomically ordered groups that constitute the object of systematics.