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Which one of the following animals has two separate circulatory pathways?

  1. A
    Shark
  2. B
    Frog
  3. C
    Lizard
  4. D
    Whale

Solution & Step-by-step Explanation

Whales are mammals. Mammals and birds have a four-chambered heart with double circulation, where oxygenated and deoxygenated blood are kept completely separate in two distinct pathways (systemic and pulmonary).

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Which one of the following animals has two separate circulatory pathways?
A
Shark
B
Frog
C
Lizard
D
Whale

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