Q. Which one of the following has an open circulatory system?
A. Octopus
B. Pheretima
C. Periplaneta
D. Hirudinaria
Answer: Periplaneta
We will be happy to hear your thoughts
A. Octopus
B. Pheretima
C. Periplaneta
D. Hirudinaria
Answer: Periplaneta
