Antennal glands are the excretory structures in :ARotiferBPrawnCPlanariaDEarthwormAnswer: B. Prawn Read Explanation: Antennal glands, also known as green glands, are indeed the excretory structures found in prawns (and other crustaceans, such as crabs and lobsters). These glands are responsible for removing waste products and excess ions from the body. Read more in App