Q. Read the given statements about blood vascular system of cockroach I. Circulatory system of cockroach is of closed type II. It contains no blood vessels except aorta heart III. Heart is 6 chambered IV. The haemolymph is composed of colourless plasma and haemocytes Which of the statements given above is/are incorrect
A) Only I
B) I, II and III
C) I and III
D) Only IV
Explanation
The circulatory system of the cockroach is of open type. Visceral organs lie in the haemocoel immersed in the blood called haemolymph. Heart of the cockroach is 13 chambered not 6 chambered
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.