A circulatory system that does not allow mixing of oxygenated and de-oxygenated blood in mammalian…

A circulatory system that does not allow mixing of oxygenated and de-oxygenated blood in mammalian heart is referred to as
  • A.
    open
  • B.
    haemocoelic
  • C.
    single
  • D.
    closed
Correct Answer: Option D
Explanation
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