Q. Which of the following are the excretory structures of crustaceans?
A. Nephridia
B. Protonephridia
C. Malpighian tubules
D. Antennal glands
Answer: Antennal glands
A. Nephridia
B. Protonephridia
C. Malpighian tubules
D. Antennal glands
Answer: Antennal glands