Anthropology is a social science not a biological science like history, Sociology, Economics & Political science which is one of the popular optional subjects in UPSC/IAS/PSC exam.
Anthropology is the study of man in totality including studying all kinds of societies and culture such as tribal and modern societies-their socio-culture institutions viz. marriage, family, kinship, economic institution, political system and belief pattern such as religion and magic. Anthropology also deals with prehistoric and modern societies i.e. socio-cultural evolution. Apart from these, Anthropology studies man as a creature i.e. studying origin and evolution of man and their physical variations from place to place. Thus, the syllabus of anthropology optional has been well maintaining the tradition i.e. holism. Whereas, other social sciences deal with man in a peace meal manner e.g. history studies past event of man, sociology deals with social structure of man not biological aspect of man at all, while economics & political science dealing with economic and political institution respectively.
Thus anthropology is a holistic study of man i.e. studying man in totality where as other social science studying man in an atomistic manner in dealing with man in part manner.
As far as anthropology syllabus in UPSC/PCS is considered the 1st paper deals with world anthropology i.e. socio cultural and biological evolution and variations across the world. While the 2nd paper is associated with Indian anthropology i.e. socio-cultural and biological evolution and variations of mankind to be studied in the Indian context.
Thus, the syllabus is well intended to consistently pursue the tradition of anthropology i.e. holism.