Which of the following does not have an open circulatory system? (a) Frog’s tadpole (b) Prawn (c) Chelifer (d) Cockroach
Option A In the open circulatory system, the blood is not confined to the blood vessels, but it flows in the open spaces. Prawn, Chelifer and cockroach have open circulatory system. Frog’s tadpole has closed circulatory system, that is the blood flows in the blood vessels.
