Adaptation to terrestrial life involved major evolutionary changes. The change from gill breathing to lung breathing was accompanied by important changes in the
A) reproductive system.
B) cardiovascular system.
C) manufacture of blood cells.
D) association of blood and interstitial fluid.

Question

Quizplus · Accepted Answer

The cardiovascular system underwent important changes during the adaptation to terrestrial life, including the evolution of a four-chambered heart and a closed circulatory system to better transport oxygen to the body tissues.

Adaptation to Terrestrial Life Involved Major Evolutionary Changes