Circulatory Pathways — Prelims Questions

Which of the following animals possesses an open circulatory system?

Which of the following statements is INCORRECT regarding single circulation?

Which of the following animals has a three-chambered heart with an incompletely divided ventricle?

In which of the following organisms does the blood flow from the gills directly to the body tissues without returning to the heart?

Which of the following is an advantage of a closed circulatory system over an open circulatory system?

Which of the following sets of animals exhibits complete double circulation?