![Which one of the following has an open circulatory system?](https://www.gkseries.com/blog/wp-content/uploads/2022/04/Which-one-of-the-following-has-an-open-circulatory-system.png)
Q. Which one of the following has an open circulatory system?
A. Octopus
B. Pheretima
C. Periplaneta
D. Hirudinaria
Answer: Periplaneta
A. Octopus
B. Pheretima
C. Periplaneta
D. Hirudinaria
Answer: Periplaneta
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