Multiple choice

If there is complete mixing of oxygenated and deoxygenated blood in the heart, then

  1. blood to the lungs would be rich in oxygen, and the tissues would receive blood low in oxygen

  2. tissues would receive completely oxygenated blood, and lungs would receive completely deoxygenated blood

  3. blood to the lungs would be low in oxygen, and the tissues would receive blood rich in oxygen

  4. lungs and tissues would receive blood with the same amount of oxygen

  5. the two types of blood will maintain their characteristics and no net effect will be there
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lungs and tissues would receive blood with the same amount of oxygen. It occurs in amphibian’s heart where lungs and tissues both are supplied with same amount of blood.

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