What type of circulation do fishes have?

What type of circulation do fishes have?
  1. Single circulation
  2. Incomplete double circulation
  3. Complete double circulation
  4. None of the above

Solution

In fishes, the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts from where deoxygenated blood is returned to the heart, hence they have a single circulation.

Asked in: NCERT

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