Which of the following excretory structure is associated with gut of the organism?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons
Which of the following excretory structure is associated with gut of the organism?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons