If you are speaking about A levels ,
(d)
Explain the relationship between classification and
phylogeny. (Evolutionary relationships between organisms
should be reflected in systematic classification.)
Classification is the organisation of species according to
particular characteristics. Classification may not take into
consideration evolutionary relationship between the species.
Phylogeny is the organisation of species according to particular
characteristics which takes into consideration the evolutionary
relationship between the species.
Please read what the examiner wants in the syllabus
document, that's the model answer!