Q. Blood vascular system of the cockroach is of
A) Open type
B) Closed type
C) Portal type
D) None of these
Explanation
Blood vascular system of the cockroach is of open type. Blood vessels are poorly developed and opens into the haemocoel
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.