Chordates have a complete digestive system and a closed circulatory system.
Because reptiles are vertebrates, they are chordates.
Reptiles have a complete digestive system and closed circulatory system.
What kind of circulatory system does a reptile have?

A. three
B. Closed
C. organ
D. complex
E. Oxygenated
F. kinetic
G. None
H. Open