Question

Difference between opentype and closed type circulatory system

Answer 1

Open type circulatory system is that system in which blood is pumped out of the heart and the cells and tissues are directly bathed in it.
Eg: Arthopodas, Mollusca

Closed circulatory system is that system in which the blood is circulated through a series of vessels of varying diameters(arteries, veins and capillaries)

Answer 2

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♦️open circulatory system:

➡️In open type the body cells and tissues are directly bathed in the blood pumped out of the heart as the blood flows In open spaces. hence, there is a direct contact and exchange of material between the blood and body cells. examples,
•Arthropods,
•non cephalopods molluscs,
•hemichordates,
•tunicates.

♦️closed circulatory system:

➡️In this system, the blood circulates through a series of the blood vessels of varying diameters i.e., arteries, veins and capillaries without ever coming in direct contact with body cells.
A series of these vessels maintain the continuous flow of blood.
The exchange of material between blood and body cells takes place in the capillaries. examples
•Annelids,
•cephalopod molluscs,
•chordates.

thanks...
nice to help you ✌️✌️