Q. Blood vascular system of earthworm is
A) Open type with Hb in RBC
B) Open type with Hb in plasma
C) Closed type with Hb in RBC
D) Closed type with Hb in plasma
Explanation
Blood vascular system in earthworm (Pheretima posthuma) is closed type (i.e., blood flows in definite blood vessels). The blood is red in colour due to presence of haemoglobin or erythrocruorin dissolved in plasma.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.