Queried GO terms:

  idGO:0055123   Detailed information
  namedigestive system development
  def"The process whose specific outcome is the progression of the digestive system over time, from its formation to the mature structure. The digestive system is the entire structure in which digestion takes place. Digestion is all of the physical, chemical, and biochemical processes carried out by multicellular organisms to break down ingested nutrients into components that may be easily absorbed and directed into metabolism." [GOC:jid]
  is_aGO:0048731 ! system development

No monarch genes has this GO term.