As adjectives the difference between saprotrophic and necrotrophic
is that saprotrophic is of or pertaining to saprotrophs (or saprobes) while necrotrophic is describing a parasite that kills its host, then feeds on the dead matter.
saprotrophic
English
Adjective
(-)
of or pertaining to saprotrophs (or saprobes).
necrotrophic
English
Adjective
(
en adjective)
(biology) Describing a parasite that kills its host, then feeds on the dead matter.
See also
*biotrophic saprotrophic