Queried GO terms:

  idGO:0031000   Detailed information
  nameresponse to caffeine
  namespacebiological_process
  def"Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a caffeine stimulus. Caffeine is an alkaloid found in numerous plant species, where it acts as a natural pesticide that paralyzes and kills certain insects feeding upon them." [CHEBI:27732, GOC:ef, GOC:mah]
  is_aGO:0014074 ! response to purine-containing compound
  is_aGO:0043279 ! response to alkaloid

Monarch genes with this GO terms:

  DPGLEAN07566

  DPGLEAN11529

  DPGLEAN14424

  DPGLEAN14425

  DPGLEAN14442

  DPGLEAN15918

  DPGLEAN21828