Question

In the figure given above, which kind of blood is represented by the green arrow and the red arrow respectively?

• A. Green- Oxygenated blood, Red – Dehydrated blood
• B. Green- Oxygenated blood, Red – Deoxygenated blood
• C. Green- Dehydrated blood, Red – Hydrated blood
• D. Green- Hydrated blood, Red – Oxygenated Blood

Answer 1

The correct option is B

Green- Oxygenated blood, Red – Deoxygenated blood

The circulatory system supplies oxygen-rich (oxygenated) blood from the lungs to the rest of the body. Similarly, it transfers oxygen deficient (deoxygenated, carbon dioxide-rich) blood from the rest of the body back to the lungs. Remember that the lungs are the site of gaseous exchange where oxygen is absorbed into blood and carbon dioxide is released back into the air. So the green arrow represents oxygenated blood and the red arrow represents deoxygenated blood.