Question

Which one of the following option(s) correctly explains the importance of double circulation?
i) It helps to improve the circulation efficiency.
ii) It helps in intermixing of oxygenated and deoxygenated blood.
iii) It helps to maintain internal body temperature in mammals.

• A. i) and iii)
• B. i) and ii)
• C. i) and iii)
• D. Only iii

Answer 1

The correct option is A i) and iii)

Double circulation helps in maintaining internal body temperature in mammals apart from a strict separation between oxygenated and deoxygenated blood within the heart.

The double circulation also improves the circulation efficiency too within the body.