Multiple choice general knowledge Earthworms have - hearts 0 1 5 7 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Earthworms have 5 pairs of aortic arches that function like hearts, commonly referred to as '5 hearts' in educational materials. These structures pump blood through the worm's circulatory system. Options A (0), B (1), and D (7) are incorrect.