Choose the correct group of structures that are associated with any one specific system in both cockroach and frog.

  • A
    Spiracles,lungs,trachea,circular muscles,nostrils.
  • B
    Ostia,sinus venosus,cloaca,anal cerci.
  • C
    Fallopian tube,ovary,stomach,skin,appendages,mouth parts.
  • D
    Ganglia,eyes,brain,liver,testis,bifid tongue.

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