Please answer this

Dear student,
Please find below the answer:

The correct answer is (B).
Hippocampus, Exocoetus, Anabas exhibit single circulation. In this, Blood passes through the heart only once in a complete circuit round of the body and only venous blood passes through the heart. It is observed in fishes.
Hope this information clears your doubt.


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I think option 'A' is correct
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Dear student,

The correct option is B) hippocampus, exocoetus, anabas

Single circulation is exhibited by fishes.

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Option B 
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