![Lung fish have ………….chambered heart](https://www.gkseries.com/blog/wp-content/uploads/2022/04/Lung-fish-have-………….chambered-heart.png)
Q. Lung fish have ………….chambered heart
A. 2
B. 4
C. 3
D. 1
Answer: 3
A. 2
B. 4
C. 3
D. 1
Answer: 3
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