Standard element of animation plot (6)
I believe the answer is:
parcel
'plot' is the definition.
(both can mean a section of land)
'standard element of animation' is the wordplay.
'standard' becomes 'par' (standard of play in golf).
'element of animation' becomes 'cel' (sheet of celluloid used in animation).
'par'+'cel'='PARCEL'
(Other definitions for parcel that I've seen before include "Pack" , "Soft shade; crayon" , "Area of land" , "Consignment of wrapped items" , "Wrapped item in post" .)