Which of the following is a sentimentally arranged excretory system?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons
Which of the following is a sentimentally arranged excretory system?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons