Q. Open circulatory system is present in Arthropods Annelids Chordates Molluscs
A) III only
B) III and II
C) I and IV
D) IV only
Explanation
When the blood does not remain confined to the blood vessels and flows into spaces in the tissues, it is termed as open circulatory system, $e.g.,$ arthropods most molluscs.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.