A student places humans in Hominidae and Chordata. Which pair of categories must occur between these two ranks?
Humans belong to the family Hominidae, order Primata, class Mammalia and phylum Chordata. Therefore, Primata and Mammalia occur between Hominidae and Chordata.
Ref: NCERT Class 11 Biology Chapter 1: The Living World Taxonomic Categories - Species and Genus